document.onmouseover = function(){return true;}

function doClick(o){
	 o.className="nav_current";
	 var j;
	 var id;
	 var e;
	 for(var i=1;i<=8;i++){
	   id ="nav"+i;
	   j = document.getElementById(id);
	   e = document.getElementById("sub"+i);
	   if(id != o.id){
	   	 j.className="nav_link";
	   	 e.style.display = "none";
	   }else{
			e.style.display = "block";
	   }
	 }
	 }
function AddFvt() {
    window.external.addFavorite(
        "http://www.merat.cn", 
        "网页教程与代码,新手学习建站的好地方[www.merat.cn]");
}

function Home() {
    event.srcElement.style.behavior = "url(#default#homepage)";
    event.srcElement.setHomePage("http://www.merat.cn");
}
if (top.location !== self.location) {
top.location=self.location;
}
//双击鼠标滚动屏幕的代码
var currentpos,timer;
function initialize()
{
timer=setInterval ("scrollwindow ()",30);
}
function sc()
{
clearInterval(timer);
}
function scrollwindow()
{
currentpos=document.body.scrollTop;
window.scroll(0,++currentpos);
if (currentpos !=document.body.scrollTop)
sc();
}
document.onmousedown=sc
document.ondblclick=initialize
//external
function externallinks() { 
  if (!document.getElementsByTagName) return; 
  var anchors = document.getElementsByTagName("a"); 
  for (var i=0; i<anchors.length; i++) { 
    var anchor = anchors[i]; 
    if (anchor.getAttribute("href") && 
        anchor.getAttribute("rel") == "external") 
      anchor.target = "_blank"; 
  } 
 }

 window.onload = externallinks;
//JS容错代码
//function killErrors() {
//return true;
//}
//window.onerror = killErrors;