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/**
* function for get the style value in special css file
* @param int css_file_id
* @param String labname
* @param String param
*/
function getStyleValue(css_file_id,labname,param)
{
var tar;
var rss;
var style;
var value;
tar = document.styleSheets[css_file_id];
rss = tar.cssRules?tar.cssRules:tar.rules
for(i=0;i<rss.length;i++)
{
style = rss[i];
if(style.selectorText.toLowerCase() == labname.toLowerCase())
{
value = style.style[param];
}
}
return
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