var load     = 0;
var MenuName = new Array('menu_japanese','menu_chinese','menu_request','menu_regist','menu_home','menu_exhibit','menu_visit','menu_seminar','menu_report','menu_list','menu_net','menu_contact','menu_press','menu_calendar','menu_sitemap',
                         'submenu_cphi','submenu_icse','submenu_pmec','submenu_sponsor','submenu_merit','submenu_charge',
                         'submenu_keynote','submenu_conference','submenu_technology','submenu_product','submenu_analysis','submenu_presentation',
                         'submenu_visit','submenu_hotel','submenu_regist','submenu_seminar','submenu_conference','submenu_presentation','submenu_search','submenu_contact','submenu_request');
var OnMenu   = new Array();
var OffMenu  = new Array();

var path = window.location.pathname.substr(0,window.location.pathname.indexOf("/eng"));

for(i in MenuName){
   var Name = MenuName[i];
   OnMenu[Name]  = new Image();
   OffMenu[Name] = new Image();
   OnMenu[Name].src  = path + "/eng/shared/" + Name + "_on.gif"; 
   OffMenu[Name].src = path + "/eng/shared/" + Name + ".gif";
}

function ChgImage(name,flag,layer){
   if(load){
      var img = (layer && document.layers) ? document.layers[layer].document.images[name] : document.images[name];
      img.src = (flag) ? OnMenu[name].src : OffMenu[name].src;
   }
}
function showLayer(num){
   if(load){
      var layType = (document.layers) ? document.layers['L' + num] : document.getElementById('L' + num).style;
      layType.visibility = 'visible';
   }
}
function hideLayer(num){
   if(load){
      var hideType = (document.layers) ? 'hide' : 'hidden';
      var layType  = (document.layers) ? document.layers['L' + num] : document.getElementById('L' + num).style;
      layType.visibility = hideType;
   }
}

function init(){
	load = 1;
	function showL1(){showLayer(1);hideLayer(2);hideLayer(3);hideLayer(4);hideLayer(5);}
	function hideL1(){hideLayer(1);}
	function showL2(){hideLayer(1);showLayer(2);hideLayer(3);hideLayer(4);hideLayer(5);}
	function hideL2(){hideLayer(2);}
	function showL3(){hideLayer(1);hideLayer(2);showLayer(3);hideLayer(4);hideLayer(5);}
	function hideL3(){hideLayer(3);}
	function showL4(){hideLayer(1);hideLayer(2);hideLayer(3);showLayer(4);hideLayer(5);}
	function hideL4(){hideLayer(4);}
	function showL5(){hideLayer(1);hideLayer(2);hideLayer(3);hideLayer(4);showLayer(5);}
	function hideL5(){hideLayer(5);}
	if(document.layers){
		document.layers['L1'].onmouseover = showL1;
		document.layers['L1'].onmouseout  = hideL1;
		document.layers['L2'].onmouseover = showL2;
		document.layers['L2'].onmouseout  = hideL2;
		document.layers['L3'].onmouseover = showL3;
		document.layers['L3'].onmouseout  = hideL3;
		document.layers['L4'].onmouseover = showL4;
		document.layers['L4'].onmouseout  = hideL4;
		document.layers['L5'].onmouseover = showL5;
		document.layers['L5'].onmouseout  = hideL5;
	}else{
		document.getElementById('L1').onmouseover = showL1;
		document.getElementById('L1').onmouseout  = hideL1;
		document.getElementById('L2').onmouseover = showL2;
		document.getElementById('L2').onmouseout  = hideL2;
		document.getElementById('L3').onmouseover = showL3;
		document.getElementById('L3').onmouseout  = hideL3;
		document.getElementById('L4').onmouseover = showL4;
		document.getElementById('L4').onmouseout  = hideL4;
		document.getElementById('L5').onmouseover = showL5;
		document.getElementById('L5').onmouseout  = hideL5;
	}
}