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alfresco-community-repo/source/web/scripts/iepngfix.htc

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<public:component" lightweight="true">
<public:attach event="onpropertychange" onevent="iePNGFix(0)" />
<script type="text/javascript">
// IE5.5+ PNG Alpha Fix v1.0RC5
// (c) 2004-2007 Angus Turnbull http://www.twinhelix.com
// This is licensed under the GNU LGPL, version 2.1 or later.
// For details, see: http://creativecommons.org/licenses/LGPL/2.1/
// This must be a path to a blank image, relative to the HTML document(s).
// In production use I suggest '/images/blank.gif' or similar. That's all!
if (typeof blankImg == 'undefined') var blankImg = getContextPath() + '/images/parts/blank.gif';
function getContextPath()
{
var path = window.location.pathname;
var idx = path.indexOf("/", 1);
var contextPath = "";
if (idx != -1)
{
contextPath = path.substring(0, idx);
}
else
{
contextPath = "";
}
return contextPath;
}
function filt(s)
{
if (s && currentStyle.width == 'auto' && currentStyle.height == 'auto')
style.width = offsetWidth + 'px';
var f = 'DXImageTransform.Microsoft.AlphaImageLoader';
var sM = (currentStyle.backgroundRepeat == 'no-repeat') ? 'crop' : 'scale';
s = (s || '').replace(/\(/g, '%28').replace(/\)/g, '%29');
if (filters[f])
{
filters[f].enabled = s ? true : false;
if (s) with (filters[f]) { src = s }
}
else if (s) style.filter = 'progid:'+f+'(src="'+s+'",sizingMethod="' + sM + '")';
}
function iePNGFix(init)
{
if (!/MSIE (5\.5|6)/.test(navigator.userAgent)) return;
var evt = init ? { propertyName: 'src,background' } : event;
var isSrc = /src/.test(evt.propertyName);
var isBg = /background/.test(evt.propertyName);
var isClass = !init &&
((this.className != this._png_class) && (this.className || this._png_class));
if (!(isSrc || isBg || isClass)) return;
this._png_class = this.className;
var blank = blankImg.match(/([^\/]+)$/)[1];
// Required for Whatever:hover support - erase any set BG if className changes.
if (isClass && ((style.backgroundImage.indexOf('url(') == -1) ||
(style.backgroundImage.indexOf(blank) > -1)))
{
style.backgroundImage = '';
return;
}
var bgSrc = currentStyle.backgroundImage || style.backgroundImage;
if (isSrc && this.src && /IMG|INPUT/.test(nodeName))
{
if ((/\.png([^\.]+|$)/i).test(src))
{
filt(src);
src = blankImg;
}
else if (src.indexOf(blank) == -1) filt();
}
else if (bgSrc.indexOf(blankImg) == -1)
{
var bgPNG = bgSrc.match(/^url[("']+(.*\.png[^\)"']*)[\)"']+$/i);
if (bgPNG)
{
style.backgroundImage = 'url("' + blankImg + '")';
filt(bgPNG[1]);
// IE link fix -- maybe add IFRAMEs etc here.
var links = all.tags('a'), i = links.length;
if (i && (/relative|absolute/i).test(currentStyle.position))
alert('IEPNGFix: Links won\'t work within positioned elements');
while (i--) links[i].style.position = 'relative';
}
else filt();
}
}
iePNGFix(1);
</script>
</public:component>