// Global Navigation
function navSwitch(menunum)	{
	var totalmenu = document.getElementById('navigation').getElementsByTagName('ul').length;
	var activateMenu = document.getElementsByName("choice");
	
	for (i=0;i<totalmenu;i++) {
		if(i==menunum)	{
			if(totalmenu > 5) {
				document.getElementById('topmenu'+ (totalmenu-1)).className = "endLine";
			}
			activateMenu[i].className = "choice";
			document.getElementById('submenu'+i).style.display = "block";
		} else {
			if(totalmenu > 5) {
				document.getElementById('topmenu'+ (totalmenu-1)).className = "endLine";
			}
			activateMenu[i].className = null;
			document.getElementById('submenu'+i).style.display = "none";
		}
	}
}

// img over/out
function imageOver(imgs) {
	imgs.src = imgs.src.replace("off.gif", "on.gif");
}
function imageOut(imgs) {
	imgs.src = imgs.src.replace("on.gif", "off.gif");
}

// png ÆÄÀÏ Åõ¸í ó¸® 
function setPng24(obj) {
	if( navigator.appVersion.indexOf("MSIE 6")  > -1){    
		obj.width=obj.height=1;
		obj.className=obj.className.replace(/\bpng24\b/i,'');
		obj.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+ obj.src +"',sizingMethod='image');"
		obj.src='';
		return '';
	}
}