function getBgColorClass(strCssClass){
	var strColor = new String();
	if (!document.styleSheets[0].rules){  
		for (var i = 0; i < document.styleSheets.length; i++){
			for (var j = 0; j < document.styleSheets[i].cssRules.length; j++){
				if (document.styleSheets[i].cssRules[j].selectorText == ("."+ strCssClass)){
					strColor = document.styleSheets[i].cssRules[j].style.backgroundColor;
					return (strColor);
				}
			}
		}
	}
	else {
		for (var i = 0; i < document.styleSheets.length; i++){
			for (var j = 0; j < document.styleSheets[i].rules.length; j++){
				if (document.styleSheets[i].rules[j].selectorText == ("."+ strCssClass)){
					strColor = document.styleSheets[i].rules[j].style.backgroundColor;          
					return (strColor);
				}
			}
		}
	}
  return ("FFFFFF");
}

function MudaCor(strForm, strObj, strClassName){
	var cssCor = getBgColorClass(strClassName)	
	  
	if (strForm != '')
		eval('document.forms["'+ strForm +'"].'+ strObj +'.style.backgroundColor = "'+ cssCor +'";');
	else
		document.getElementById(strObj).style.backgroundColor = cssCor;
}