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

function gId(id){
	return document.getElementById(id);
}
function gNa(obj,na){
	return obj.getElementsByTagName(na);
}

function tab_event(id,eleName){
	if (!gId(id)){return false;}
	var eleType = gNa(gId(id),eleName);
	var n= 0;
	for (var i=0; i<eleType.length; i++)
	{
		eleType[i].n = i;
		eleType[i].onclick = actEvent;
	}
	function actEvent(){
		for (var j=0; j<eleType.length; j++)
		{
			if (this == eleType[j]){
				this.className = "on";
				var img = gNa(eleType[this.n],'img');
				if(img[0]){
					img[0].src = img[0].src.replace("_off.gif","_on.gif");
				}
			} else {
				eleType[j].className = "";
				var img = gNa(eleType[j],'img');
				if(img[0]){
					img[0].src = img[0].src.replace("_on.gif","_off.gif");
				}
			}
		}
	}
}
//페이지 로드 할때 부르는 함수 onload와 같음
addLoadEvent(function(){
	tab_event("tab","li");
})
// imgover
	function imgOver() {
	  var aImages = document.getElementsByTagName('img');
	  for(var i=0; i<aImages.length; i++) {
		if (aImages[i].className == 'imgover') {
		  aImages[i].onmouseover = function() {
			var img_src =  this.getAttribute('src');
			img_src = img_src.replace("_off", "_on");
			this.setAttribute('src', img_src);
			}
		   aImages[i].onmouseout = function() {
			  var img_src =  this.getAttribute('src');
			  img_src = img_src.replace("_on", "_off");
			  this.setAttribute('src', img_src);
		   }
		}
	}
	return false;
	}
addLoadEvent(imgOver);

function openWindow(url, target, w, h) {
  var popOption = "width="+w+"px, height="+h+"px, toolbar=0,location=0,status=0,menubar=0,scrollbars=0,resizable=0";
  window.open(url, target, popOption);
}