//### 메인 탭용

function mainTap()
{

	if(!document.getElementsByTagName) return false;
	if(!document.getElementById) return false;

	if(!document.getElementById("main-pds")) 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++){
		links1[i].onclick=function(){
			switch(this.id){
				case "me1":
					document.getElementById("main-mem").style.display="block";
					document.getElementById("main-pds").style.display="none";
					document.getElementById("main-col").style.display="none";
					document.getElementById("a_mem").focus();
					break;
				case "me2":
					document.getElementById("main-mem").style.display="none";
					document.getElementById("main-pds").style.display="block";
					document.getElementById("main-col").style.display="none";
					document.getElementById("a_pds").focus();
					break;
				case "me3":
					document.getElementById("main-mem").style.display="none";
					document.getElementById("main-pds").style.display="none";
					document.getElementById("main-col").style.display="block";
					document.getElementById("a_col").focus();
					break;
			}
			return false;
		}		
	}

	for(var i=0;i<links2.length;i++){
		links2[i].onclick=function(){
			switch(this.id){
				case "pd1":
					document.getElementById("main-mem").style.display="block";
					document.getElementById("main-pds").style.display="none";
					document.getElementById("main-col").style.display="none";
					document.getElementById("a_mem").focus();
					break;
				case "pd2":
					document.getElementById("main-mem").style.display="none";
					document.getElementById("main-pds").style.display="block";
					document.getElementById("main-col").style.display="none";
					document.getElementById("a_pds").focus();
					break;
				case "pd3":
					document.getElementById("main-mem").style.display="none";
					document.getElementById("main-pds").style.display="none";
					document.getElementById("main-col").style.display="block";
					document.getElementById("a_col").focus();
					break;
			}
			return false;
		}		
	}

	for(var i=0;i<links3.length;i++){
		links3[i].onclick=function(){
			switch(this.id){
				case "co1":
					document.getElementById("main-mem").style.display="block";
					document.getElementById("main-pds").style.display="none";
					document.getElementById("main-col").style.display="none";
					document.getElementById("a_mem").focus();
					break;
				case "co2":
					document.getElementById("main-mem").style.display="none";
					document.getElementById("main-pds").style.display="block";
					document.getElementById("main-col").style.display="none";
					document.getElementById("a_pds").focus();
					break;
				case "co3":
					document.getElementById("main-mem").style.display="none";
					document.getElementById("main-pds").style.display="none";
					document.getElementById("main-col").style.display="block";
					document.getElementById("a_col").focus();
					break;
			}
			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);