function GetCurrentStyle (obj, prop) {if (obj.currentStyle) {return obj.currentStyle[prop];}else if (window.getComputedStyle) {prop = prop.replace (/([A-Z])/g, "-$1");prop = prop.toLowerCase ();return window.getComputedStyle (obj, "").getPropertyValue(prop);}return null;} 代码来自于http://tvweek.com/javascripts/default.js
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