$(document).ready(function(){ 
	$(document).pngFix(); 
	$('.three-column ul li:eq(0)').addClass('highlight');
	$('.commend-list li:even').addClass('bg');
}); 

function nTabs(thisObj,Num){
	if(thisObj.className == "active")return;
		var tabObj = thisObj.parentNode.id;
		var tabList = document.getElementById(tabObj).getElementsByTagName("li");
		for(i=0; i <tabList.length; i++)
		{
			if (i == Num)
			{
				thisObj.className = "active"; 
				document.getElementById(tabObj+"_"+i).style.display = "block";
			}else{
			tabList[i].className = "normal"; 
			document.getElementById(tabObj+"_"+i).style.display = "none";
		}
	}
}