// Appends the Knowledge Base icon to the end of KB results displayed on the intelligent 404 page.
function iconAppend()
{
var results = $('results404').descendants().select(function(el) {
    return el.match('dt a');
});
results.each(function(el) {
    var URL = el.readAttribute('href');
    if (URL !== '' && URL.match('/kb/'))
    {
        el.insert({
            after: new Element('img', {
                src: '/webimages/icon-knowledgebase.gif',
                title: 'This result is from the Knowledge Base site'
            })
        });
    }
});
}


function evenColHeights(els, heightAdjust, callBack)
{
var finalColHeight;

// Columns to even up in height
var elements = $$(els.split('|'));

// Build an Array with each column's height
var colHeights = elements.map(function(el) {
    return el.getHeight();
});

// Find the largest value in the Array of column heights, add the height adjustment if supplied
if (typeof heightAdjust !== 'undefined' && heightAdjust !== 0)
{
    finalColHeight = colHeights.max() + heightAdjust + 'px';
}
else
{
    finalColHeight = colHeights.max() + 'px';
}

// Set each column to be the final column height determined above
elements.each(function(el) {
    el.setStyle({
        height: finalColHeight
    });
});

// Optional function to execute after evening the columns
if (!callBack)
{
    callBack;
}
}

function fixPNGs()
{
Prototype.Browser.IE6 = Prototype.Browser.IE && parseInt(navigator.userAgent.substring(navigator.userAgent.indexOf("MSIE") + 5), 10) == 6;
if (Prototype.Browser.IE6) {
    $$('.pngfix').invoke('pngHack');
}
}

// Uses prototype to fix PNG images in IE6
Element.addMethods({
pngHack: function(elem) {
    var el = $(elem);
    var transparentGifPath = '/styles/img/blank.gif';
    var alphaImgSrc;
    var sizingMethod;
    if (Prototype.Browser.IE) {
        /* if it's an img and a png */
        if ((el.match('img')) && (el.src.include('png'))) {
            alphaImgSrc = el.src;
            sizingMethod = 'scale';
            el.src = transparentGifPath;
            /* if it's an element with a background png */
        } else if (el.getStyle('background-image').include('png')) {
            var bgColor = '';
            if (el.getStyle('background-color')) {
                bgColor = el.getStyle('background-color') + ' ';
            }
            var elBg = el.getStyle('background-image');
            alphaImgSrc = elBg.slice(5, elBg.length - 2);
            sizingMethod = 'crop';
            el.setStyle({
                'background': bgColor + transparentGifPath
            });
        }
        if (alphaImgSrc) {
            el.runtimeStyle.filter = 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src="#{alphaImgSrc}",sizingMethod="#{sizingMethod}")'.interpolate({
                alphaImgSrc: alphaImgSrc,
                sizingMethod: sizingMethod
            });
        }
    }
    return el;
}
});