window.onerror = function()
	{
		return true;
	}
function scrollDoor(){
}
scrollDoor.prototype = {
 sd : function(menus,divs,openClass,closeClass){
  var _this = this;
  if(menus.length != divs.length)
  {
   alert("菜单层数量和内容层数量不一样!");
   return false;
  }    
  for(var i = 0 ; i < menus.length ; i++)
  { 
   _this.$(menus[i]).value = i;    
   _this.$(menus[i]).onmouseover = function(){
     
    for(var j = 0 ; j < menus.length ; j++)
    {      
     _this.$(menus[j]).className = closeClass;
     _this.$(divs[j]).style.display = "none";
    }
    _this.$(menus[this.value]).className = openClass; 
    _this.$(divs[this.value]).style.display = "block";    
   }
  }
  },
 $ : function(oid){
  if(typeof(oid) == "string")
  return document.getElementById(oid);
  return oid;
 }
}
window.onload = function(){
 var SDmodel = new scrollDoor();
 SDmodel.sd(["LT01","LT02"],["LC01","LC02"],"s","");
 SDmodel.sd(["LT11","LT12"],["LC11","LC12"],"s","");
 SDmodel.sd(["LT21","LT22"],["LC21","LC22"],"s","");
 SDmodel.sd(["LT31","LT32"],["LC31","LC32"],"s","");
 SDmodel.sd(["CT01","CT02"],["CC01","CC02"],"s","");
 SDmodel.sd(["CT11","CT12","CT13"],["CC11","CC12","CC13"],"s","");
 SDmodel.sd(["CT21","CT22"],["CC21","CC22"],"s","");
 SDmodel.sd(["CT31","CT32","CT33"],["CC31","CC32","CC33"],"s","");
 SDmodel.sd(["img1","img2","img3","img4","img5","img6","img7","img8","img9"],["imgi1","imgi2","imgi3","imgi4","imgi5","imgi6","imgi7","imgi8","imgi9"],"s","");
 document.execCommand('BackgroundImageCache',false,true);
}

function area_nav(index){
for(var i=1;i<=2;i++)
{
	if( document.getElementById("nav"+i.toString()) != null )
	{
		document.getElementById("nav"+i.toString()).style.display = 'none';	
	}
}
	document.getElementById("nav"+index.toString()).style.display = 'block';
}