//set nav on mouse over event	
	function nav_mouse_enter(obj){
		obj.t_src=obj.src;
		obj.src=obj.id;
	}
	
	function nav_mouse_leave(obj){
		obj.src=obj.t_src;
	}
	
	$('nav').getElements("img").each(function(item,index){
		item.addEvent('mouseenter', function(){
			nav_mouse_enter(this);
		});
		item.addEvent('mouseleave', function(){
			nav_mouse_leave(this);
		});
	})
	
	//set onload
	function init(){
		//set nav
		if($type(Location)=="number"){
			var target_obj;
			var temp_var;
			target_obj=$('nav').getElements("img")[Location];
			if(target_obj){
				temp_var=target_obj.src;
				target_obj.src=target_obj.id;
				target_obj.id=temp_var;
			}
		}
	}
	
	init();
	
function correctPNG()
   {
   for(var i=0; i<document.images.length; i++)
      {
     var img = document.images[i]
     var imgName = img.src.toUpperCase()
     if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
        {
       var imgID = (img.id) ? "id='" + img.id + "' " : ""
       var imgClass = (img.className) ? "class='" + img.className + "' " : ""
       var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
       var imgStyle = "display:inline-block;" + img.style.cssText
       if (img.align == "left") imgStyle = "float:left;" + imgStyle
       if (img.align == "right") imgStyle = "float:right;" + imgStyle
       if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle      
       var strNewHTML = "<span " + imgID + imgClass + imgTitle
       + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
        + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
       + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>"
       img.outerHTML = strNewHTML
       i = i-1
        }
      }
   }


is_replace=false;
is_replace=(!window.ie7)&&(window.ie);
if(is_replace){
	correctPNG();
};