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<public:component> |
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<public:attach event="onpropertychange" onevent="propertyChanged()" /> |
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<script> |
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var supported = /MSIE (5\.5)|[6789]/.test(navigator.userAgent) && navigator.platform == "Win32"; |
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var realSrc; |
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var blankSrc = "skins/default/images/blank.gif"; |
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if (supported) fixImage(); |
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function propertyChanged() { |
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if (!supported) return; |
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var pName = event.propertyName; |
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if (pName != "src") return; |
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// if not set to blank |
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if ( ! new RegExp(blankSrc).test(src)) |
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fixImage(); |
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}; |
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function fixImage() { |
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// get src |
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var src = element.src; |
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// check for real change |
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if (src == realSrc) { |
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element.src = blankSrc; |
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return; |
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} |
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if ( ! new RegExp(blankSrc).test(src)) { |
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// backup old src |
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realSrc = src; |
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element._original_src = realSrc; |
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} |
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// test for png |
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if ( /\.png$/.test( realSrc.toLowerCase() ) ) { |
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// set blank image |
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element.src = blankSrc; |
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// set filter |
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element.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + |
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src + "',sizingMethod='crop')"; |
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} |
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else { |
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// remove filter |
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element.runtimeStyle.filter = ""; |
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} |
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} |
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</script> |
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</public:component> |