//### 메인 탭용

function mainTap()
{

	if(!document.getElementsByTagName) return false;
	if(!document.getElementById) return false;
	if(!document.getElementById("main-col")) return false;
	
	document.getElementById("main-pds").style.display="none";
	document.getElementById("main-col").style.display="none";

	var mtab1=document.getElementById("article-tab1");
	var mtab2=document.getElementById("article-tab2");
	var mtab3=document.getElementById("article-tab3");

	var links1 = mtab1.getElementsByTagName("li");
	var links2 = mtab2.getElementsByTagName("li");
	var links3 = mtab3.getElementsByTagName("li");


	for(var i=0;i< links1.length;i++)
	{

		if(links1[i].className=="off")
		{
			links1[i].onclick=function(){
				document.getElementById("main-mem").style.display="block";
				document.getElementById("main-pds").style.display="none";
				document.getElementById("main-col").style.display="none";
				document.getElementById("mem").focus();
				return false;
			}
		}
		

	}

	for(var i=0;i< links2.length;i++)
	{
		
		if(links2[i].className=="off")
		{
			links2[i].onclick=function(){
				document.getElementById("main-mem").style.display="none";
				document.getElementById("main-pds").style.display="block";
				document.getElementById("main-col").style.display="none";
				document.getElementById("psd").focus();
				return false;
			}
		}
	}

	for(var i=0;i< links3.length;i++)
	{
		
		
		if(links3[i].className=="off")
		{
			links3[i].onclick=function(){
				document.getElementById("main-mem").style.display="none";
				document.getElementById("main-pds").style.display="none";
				document.getElementById("main-col").style.display="block";
				document.getElementById("col").focus();
				return false;
			}
		}
	}
}

/**** onload event func ********/
function addLoadEvent(func){
	var oldonload = window.onload;
	if (typeof window.onload != 'function'){
		window.onload = func;
	}else{
		window.onload = function() {
			oldonload();
			func();
		}
	}
}


addLoadEvent(mainTap);