/*
<DIV id=testbox class=roundify name=testbox style="width: 400px; height: 400px; background: #AAAAAA;">

Test TestTest Test TestTest Test TestTest Test TestTest Test TestTest Test TestTest Test TestTest Test TestTest Test TestTest Test TestTest 
</DIV>

<IMG class=roundify SRC="watluljeinle.jpg">


<SCRIPT>
DD_roundies.addRule('#doc .testbox', '10px 5px'); // selector and multiple radii
^/
/**
* DD_roundies, this adds rounded-corner CSS in standard browsers and VML sublayers in IE that accomplish a similar appearance when comparing said browsers.
* Author: Drew Diller
* Email: drew.diller@gmail.com
* URL: http://www.dillerdesign.com/experiment/DD_roundies/
* Version: 0.0.2a
* Licensed under the MIT License: http://dillerdesign.com/experiment/DD_roundies/#license
*
* Usage:
* DD_roundies.addRule('#doc .container', '10px 5px'); // selector and multiple radii
* DD_roundies.addRule('.box', 5, true); // selector, radius, and optional addition of border-radius code for standard browsers.
* 
* Just want the PNG fixing effect for IE6, and don't want to also use the DD_belatedPNG library?  Don't give any additional arguments after the CSS selector.
* DD_roundies.addRule('.your .example img');
**/

var DD_roundies = {

    ns: 'DD_roundies',

    IE6: false,
    IE7: false,
    IE8: false,
    IEversion: function() {
        if (document.documentMode != 8 && document.namespaces && !document.namespaces[this.ns]) {
            this.IE6 = true;
            this.IE7 = true;
        }
        else if (document.documentMode == 8) {
            this.IE8 = true;
        }
    },
    querySelector: document.querySelectorAll,
    selectorsToProcess: [],
    imgSize: {},

    createVmlNameSpace: function() { /* enable VML */
        if (this.IE6 || this.IE7) {
            document.namespaces.add(this.ns, 'urn:schemas-microsoft-com:vml');
        }
        if (this.IE8) {
            document.writeln('<?import namespace="' + this.ns + '" implementation="#default#VML" ?>');
        }
    },

    createVmlStyleSheet: function() { /* style VML, enable behaviors */
        /*
        Just in case lots of other developers have added
        lots of other stylesheets using document.createStyleSheet
        and hit the 31-limit mark, let's not use that method!
        further reading: http://msdn.microsoft.com/en-us/library/ms531194(VS.85).aspx
        */
        var style = document.createElement('style');
        document.documentElement.firstChild.insertBefore(style, document.documentElement.firstChild.firstChild);
        if (style.styleSheet) { /* IE */
            try {
                var styleSheet = style.styleSheet;
                styleSheet.addRule(this.ns + '\\:*', '{behavior:url(#default#VML)}');
                this.styleSheet = styleSheet;
            } catch (err) { }
        }
        else {
            this.styleSheet = style;
        }
    },

    /**
    * Method to use from afar - refer to it whenever.
    * Example for IE only: DD_roundies.addRule('div.boxy_box', '10px 5px');
    * Example for IE, Firefox, and WebKit: DD_roundies.addRule('div.boxy_box', '10px 5px', true);
    * @param {String} selector - REQUIRED - a CSS selector, such as '#doc .container'
    * @param {Integer} radius - REQUIRED - the desired radius for the box corners
    * @param {Boolean} standards - OPTIONAL - true if you also wish to output -moz-border-radius/-webkit-border-radius/border-radius declarations
    **/
    addRule: function(selector, rad, standards) {
        if (typeof rad == 'undefined' || rad === null) {
            rad = 0;
        }
        if (rad.constructor.toString().search('Array') == -1) {
            rad = rad.toString().replace(/[^0-9 ]/g, '').split(' ');
        }
        for (var i = 0; i < 4; i++) {
            rad[i] = (!rad[i] && rad[i] !== 0) ? rad[Math.max((i - 2), 0)] : rad[i];
        }
        if (this.styleSheet) {
            if (this.styleSheet.addRule) { /* IE */
                var selectors = selector.split(','); /* multiple selectors supported, no need for multiple calls to this anymore */
                for (var i = 0; i < selectors.length; i++) {
                    this.styleSheet.addRule(selectors[i], 'behavior:expression(DD_roundies.roundify.call(this, [' + rad.join(',') + ']))'); /* seems to execute the function without adding it to the stylesheet - interesting... */
                }
            }
            else if (standards) {
                var moz_implementation = rad.join('px ') + 'px';
                this.styleSheet.appendChild(document.createTextNode(selector + ' {border-radius:' + moz_implementation + '; -moz-border-radius:' + moz_implementation + ';}'));
                this.styleSheet.appendChild(document.createTextNode(selector + ' {-webkit-border-top-left-radius:' + rad[0] + 'px ' + rad[0] + 'px; -webkit-border-top-right-radius:' + rad[1] + 'px ' + rad[1] + 'px; -webkit-border-bottom-right-radius:' + rad[2] + 'px ' + rad[2] + 'px; -webkit-border-bottom-left-radius:' + rad[3] + 'px ' + rad[3] + 'px;}'));
            }
        }
        else if (this.IE8) {
            this.selectorsToProcess.push({ 'selector': selector, 'radii': rad });
        }
    },

    readPropertyChanges: function(el) {
        switch (event.propertyName) {
            case 'style.border':
            case 'style.borderWidth':
            case 'style.padding':
                this.applyVML(el);
                break;
            case 'style.borderColor':
                this.vmlStrokeColor(el);
                break;
            case 'style.backgroundColor':
            case 'style.backgroundPosition':
            case 'style.backgroundRepeat':
                this.applyVML(el);
                break;
            case 'style.display':
                el.vmlBox.style.display = (el.style.display == 'none') ? 'none' : 'block';
                break;
            case 'style.filter':
                this.vmlOpacity(el);
                break;
            case 'style.zIndex':
                el.vmlBox.style.zIndex = el.style.zIndex;
                break;
        }
    },

    applyVML: function(el) {
        el.runtimeStyle.cssText = '';
        this.vmlFill(el);
        this.vmlStrokeColor(el);
        this.vmlStrokeWeight(el);
        this.vmlOffsets(el);
        this.vmlPath(el);
        this.nixBorder(el);
        this.vmlOpacity(el);
    },

    vmlOpacity: function(el) {
        if (el.currentStyle.filter.search('lpha') != -1) {
            var trans = el.currentStyle.filter;
            trans = parseInt(trans.substring(trans.lastIndexOf('=') + 1, trans.lastIndexOf(')')), 10) / 100;
            for (var v in el.vml) {
                el.vml[v].filler.opacity = trans;
            }
        }
    },

    vmlFill: function(el) {
        if (!el.currentStyle) {
            return;
        } else {
            var elStyle = el.currentStyle;
        }
        el.runtimeStyle.backgroundColor = '';
        el.runtimeStyle.backgroundImage = '';
        var noColor = (elStyle.backgroundColor == 'transparent');
        var noImg = true;
        if (elStyle.backgroundImage != 'none' || el.isImg) {
            if (!el.isImg) {
                el.vmlBg = elStyle.backgroundImage;
                el.vmlBg = el.vmlBg.substr(5, el.vmlBg.lastIndexOf('")') - 5);
            }
            else {
                el.vmlBg = el.src;
            }
            var lib = this;
            if (!lib.imgSize[el.vmlBg]) { /* determine size of loaded image */
                var img = document.createElement('img');
                img.attachEvent('onload', function() {
                    this.width = this.offsetWidth; /* weird cache-busting requirement! */
                    this.height = this.offsetHeight;
                    lib.vmlOffsets(el);
                });
                img.className = lib.ns + '_sizeFinder';
                img.runtimeStyle.cssText = 'behavior:none; position:absolute; top:-10000px; left:-10000px; border:none;'; /* make sure to set behavior to none to prevent accidental matching of the helper elements! */
                img.src = el.vmlBg;
                img.removeAttribute('width');
                img.removeAttribute('height');
                document.body.insertBefore(img, document.body.firstChild);
                lib.imgSize[el.vmlBg] = img;
            }
            el.vml.image.filler.src = el.vmlBg;
            noImg = false;
        }
        el.vml.image.filled = !noImg;
        el.vml.image.fillcolor = 'none';
        el.vml.color.filled = !noColor;
        el.vml.color.fillcolor = elStyle.backgroundColor;
        el.runtimeStyle.backgroundImage = 'none';
        el.runtimeStyle.backgroundColor = 'transparent';
    },

    vmlStrokeColor: function(el) {
        el.vml.stroke.fillcolor = el.currentStyle.borderColor;
    },

    vmlStrokeWeight: function(el) {
        var borders = ['Top', 'Right', 'Bottom', 'Left'];
        el.bW = {};
        for (var b = 0; b < 4; b++) {
            el.bW[borders[b]] = parseInt(el.currentStyle['border' + borders[b] + 'Width'], 10) || 0;
        }
    },

    vmlOffsets: function(el) {
        var dims = ['Left', 'Top', 'Width', 'Height'];
        for (var d = 0; d < 4; d++) {
            el.dim[dims[d]] = el['offset' + dims[d]];
        }
        var assign = function(obj, topLeft) {
            obj.style.left = (topLeft ? 0 : el.dim.Left) + 'px';
            obj.style.top = (topLeft ? 0 : el.dim.Top) + 'px';
            obj.style.width = el.dim.Width + 'px';
            obj.style.height = el.dim.Height + 'px';
        };
        for (var v in el.vml) {
            var mult = (v == 'image') ? 1 : 2;
            el.vml[v].coordsize = (el.dim.Width * mult) + ', ' + (el.dim.Height * mult);
            assign(el.vml[v], true);
        }
        assign(el.vmlBox, false);

        if (DD_roundies.IE8) {
            el.vml.stroke.style.margin = '-1px';
            if (typeof el.bW == 'undefined') {
                this.vmlStrokeWeight(el);
            }
            el.vml.color.style.margin = (el.bW.Top - 1) + 'px ' + (el.bW.Left - 1) + 'px';
        }
    },

    vmlPath: function(el) {
        var coords = function(direction, w, h, r, aL, aT, mult) {
            var cmd = direction ? ['m', 'qy', 'l', 'qx', 'l', 'qy', 'l', 'qx', 'l'] : ['qx', 'l', 'qy', 'l', 'qx', 'l', 'qy', 'l', 'm']; /* whoa */
            aL *= mult;
            aT *= mult;
            w *= mult;
            h *= mult;
            var R = r.slice(); /* do not affect original array */
            for (var i = 0; i < 4; i++) {
                R[i] *= mult;
                R[i] = Math.min(w / 2, h / 2, R[i]); /* make sure you do not get funky shapes - pick the smallest: half of the width, half of the height, or current value */
            }
            var coords = [
				cmd[0] + Math.floor(0 + aL) + ',' + Math.floor(R[0] + aT),
				cmd[1] + Math.floor(R[0] + aL) + ',' + Math.floor(0 + aT),
				cmd[2] + Math.ceil(w - R[1] + aL) + ',' + Math.floor(0 + aT),
				cmd[3] + Math.ceil(w + aL) + ',' + Math.floor(R[1] + aT),
				cmd[4] + Math.ceil(w + aL) + ',' + Math.ceil(h - R[2] + aT),
				cmd[5] + Math.ceil(w - R[2] + aL) + ',' + Math.ceil(h + aT),
				cmd[6] + Math.floor(R[3] + aL) + ',' + Math.ceil(h + aT),
				cmd[7] + Math.floor(0 + aL) + ',' + Math.ceil(h - R[3] + aT),
				cmd[8] + Math.floor(0 + aL) + ',' + Math.floor(R[0] + aT)
			];
            if (!direction) {
                coords.reverse();
            }
            var path = coords.join('');
            return path;
        };

        if (typeof el.bW == 'undefined') {
            this.vmlStrokeWeight(el);
        }
        var bW = el.bW;
        var rad = el.DD_radii.slice();

        /* determine outer curves */
        var outer = coords(true, el.dim.Width, el.dim.Height, rad, 0, 0, 2);

        /* determine inner curves */
        rad[0] -= Math.max(bW.Left, bW.Top);
        rad[1] -= Math.max(bW.Top, bW.Right);
        rad[2] -= Math.max(bW.Right, bW.Bottom);
        rad[3] -= Math.max(bW.Bottom, bW.Left);
        for (var i = 0; i < 4; i++) {
            rad[i] = Math.max(rad[i], 0);
        }
        var inner = coords(false, el.dim.Width - bW.Left - bW.Right, el.dim.Height - bW.Top - bW.Bottom, rad, bW.Left, bW.Top, 2);
        var image = coords(true, el.dim.Width - bW.Left - bW.Right + 1, el.dim.Height - bW.Top - bW.Bottom + 1, rad, bW.Left, bW.Top, 1);

        /* apply huge path string */
        el.vml.color.path = inner;
        el.vml.image.path = image;
        el.vml.stroke.path = outer + inner;

        this.clipImage(el);
    },

    nixBorder: function(el) {
        var s = el.currentStyle;
        var sides = ['Top', 'Left', 'Right', 'Bottom'];
        for (var i = 0; i < 4; i++) {
            el.runtimeStyle['padding' + sides[i]] = (parseInt(s['padding' + sides[i]], 10) || 0) + (parseInt(s['border' + sides[i] + 'Width'], 10) || 0) + 'px';
        }
        el.runtimeStyle.border = 'none';
    },

    clipImage: function(el) {
        var lib = DD_roundies;
        if (!el.vmlBg || !lib.imgSize[el.vmlBg]) {
            return;
        }
        var thisStyle = el.currentStyle;
        var bg = { 'X': 0, 'Y': 0 };
        var figurePercentage = function(axis, position) {
            var fraction = true;
            switch (position) {
                case 'left':
                case 'top':
                    bg[axis] = 0;
                    break;
                case 'center':
                    bg[axis] = 0.5;
                    break;
                case 'right':
                case 'bottom':
                    bg[axis] = 1;
                    break;
                default:
                    if (position.search('%') != -1) {
                        bg[axis] = parseInt(position, 10) * 0.01;
                    }
                    else {
                        fraction = false;
                    }
            }
            var horz = (axis == 'X');
            bg[axis] = Math.ceil(fraction ? ((el.dim[horz ? 'Width' : 'Height'] - (el.bW[horz ? 'Left' : 'Top'] + el.bW[horz ? 'Right' : 'Bottom'])) * bg[axis]) - (lib.imgSize[el.vmlBg][horz ? 'width' : 'height'] * bg[axis]) : parseInt(position, 10));
            bg[axis] += 1;
        };
        for (var b in bg) {
            figurePercentage(b, thisStyle['backgroundPosition' + b]);
        }
        el.vml.image.filler.position = (bg.X / (el.dim.Width - el.bW.Left - el.bW.Right + 1)) + ',' + (bg.Y / (el.dim.Height - el.bW.Top - el.bW.Bottom + 1));
        var bgR = thisStyle.backgroundRepeat;
        var c = { 'T': 1, 'R': el.dim.Width + 1, 'B': el.dim.Height + 1, 'L': 1 }; /* these are defaults for repeat of any kind */
        var altC = { 'X': { 'b1': 'L', 'b2': 'R', 'd': 'Width' }, 'Y': { 'b1': 'T', 'b2': 'B', 'd': 'Height'} };
        if (bgR != 'repeat') {
            c = { 'T': (bg.Y), 'R': (bg.X + lib.imgSize[el.vmlBg].width), 'B': (bg.Y + lib.imgSize[el.vmlBg].height), 'L': (bg.X) }; /* these are defaults for no-repeat - clips down to the image location */
            if (bgR.search('repeat-') != -1) { /* now let's revert to dC for repeat-x or repeat-y */
                var v = bgR.split('repeat-')[1].toUpperCase();
                c[altC[v].b1] = 1;
                c[altC[v].b2] = el.dim[altC[v].d] + 1;
            }
            if (c.B > el.dim.Height) {
                c.B = el.dim.Height + 1;
            }
        }
        el.vml.image.style.clip = 'rect(' + c.T + 'px ' + c.R + 'px ' + c.B + 'px ' + c.L + 'px)';
    },

    pseudoClass: function(el) {
        var self = this;
        setTimeout(function() { /* would not work as intended without setTimeout */
            self.applyVML(el);
        }, 1);
    },

    reposition: function(el) {
        this.vmlOffsets(el);
        this.vmlPath(el);
    },

    roundify: function(rad) {
        this.style.behavior = 'none';
        if (!this.currentStyle) {
            return;
        }
        else {
            var thisStyle = this.currentStyle;
        }
        var allowed = { BODY: false, TABLE: false, TR: false, TD: false, SELECT: false, OPTION: false, TEXTAREA: false };
        if (allowed[this.nodeName] === false) { /* elements not supported yet */
            return;
        }
        var self = this; /* who knows when you might need a setTimeout */
        var lib = DD_roundies;
        this.DD_radii = rad;
        this.dim = {};

        /* attach handlers */
        var handlers = { resize: 'reposition', move: 'reposition' };
        if (this.nodeName == 'A') {
            var moreForAs = { mouseleave: 'pseudoClass', mouseenter: 'pseudoClass', focus: 'pseudoClass', blur: 'pseudoClass' };
            for (var a in moreForAs) {
                handlers[a] = moreForAs[a];
            }
        }
        for (var h in handlers) {
            this.attachEvent('on' + h, function() {
                lib[handlers[h]](self);
            });
        }
        this.attachEvent('onpropertychange', function() {
            lib.readPropertyChanges(self);
        });

        /* ensure that this elent and its parent is given hasLayout (needed for accurate positioning) */
        var giveLayout = function(el) {
            el.style.zoom = 1;
            if (el.currentStyle.position == 'static') {
                el.style.position = 'relative';
            }
        };
        giveLayout(this.offsetParent);
        giveLayout(this);

        /* create vml elements */
        this.vmlBox = document.createElement('ignore'); /* IE8 really wants to be encased in a wrapper element for the VML to work, and I don't want to disturb getElementsByTagName('div') - open to suggestion on how to do this differently */
        this.vmlBox.runtimeStyle.cssText = 'behavior:none; position:absolute; margin:0; padding:0; border:0; background:none;'; /* super important - if something accidentally matches this (you yourseld did this once, Drew), you'll get infinitely-created elements and a frozen browser! */
        this.vmlBox.style.zIndex = thisStyle.zIndex;
        this.vml = { 'color': true, 'image': true, 'stroke': true };
        for (var v in this.vml) {
            this.vml[v] = document.createElement(lib.ns + ':shape');
            this.vml[v].filler = document.createElement(lib.ns + ':fill');
            this.vml[v].appendChild(this.vml[v].filler);
            this.vml[v].stroked = false;
            this.vml[v].style.position = 'absolute';
            this.vml[v].style.zIndex = thisStyle.zIndex;
            this.vml[v].coordorigin = '1,1';
            this.vmlBox.appendChild(this.vml[v]);
        }
        this.vml.image.fillcolor = 'none';
        this.vml.image.filler.type = 'tile';
        this.parentNode.insertBefore(this.vmlBox, this);

        this.isImg = false;
        if (this.nodeName == 'IMG') {
            this.isImg = true;
            this.style.visibility = 'hidden';
        }

        setTimeout(function() {
            lib.applyVML(self);
        }, 1);
    }

};

try {
    document.execCommand("BackgroundImageCache", false, true);
} catch (err) { }
DD_roundies.IEversion();
DD_roundies.createVmlNameSpace();
DD_roundies.createVmlStyleSheet();

if (DD_roundies.IE8 && document.attachEvent && DD_roundies.querySelector) {
    document.attachEvent('onreadystatechange', function() {
        if (document.readyState == 'complete') {
            var selectors = DD_roundies.selectorsToProcess;
            var length = selectors.length;
            var delayedCall = function(node, radii, index) {
                setTimeout(function() {
                    DD_roundies.roundify.call(node, radii);
                }, index * 100);
            };
            for (var i = 0; i < length; i++) {
                var results = document.querySelectorAll(selectors[i].selector);
                var rLength = results.length;
                for (var r = 0; r < rLength; r++) {
                    if (results[r].nodeName != 'INPUT') { /* IE8 doesn't like to do this to inputs yet */
                        delayedCall(results[r], selectors[i].radii, r);
                    }
                }
            }
        }
    });
}