addLoadEvent(initMenu);
function initMenu(){
	 var nav = new Array(10);
	 nav[0]="Home";
	 nav[1]="About";
	 nav[2]="News";
	 nav[3]="Product";
	 nav[4]="Strategy";
	 nav[5]="Showcase";
	 nav[6]="Common";
	 nav[7]="Service";
	 nav[8]="Linkman";
	  var navLinks=document.getElementById("nav").getElementsByTagName("li");
	  for(var i=0;i<navLinks.length;i++){
		  if(navLinks[i].className=="prilink"){		 
			  navLinks[i].onmouseover=dropMenu;  
              navLinks[i].onmouseout=closeMenu;	
			  bl=navLinks[i].firstChild;
			  bl.className="alink";
			  document.getElementById("0").className="alink1";
		  }
	  }
     function dropMenu(){
		  document.getElementById("0").className="alink";
		  document.getElementById("csh").style.display="none";
		   aLink=this.firstChild;
		   bLink=this.firstChild;
		   bLink.className="alink1";
		   bvalue=bLink.innerHTML;
		   bLink.innerHTML=nav[bLink.id];
		   if(aLink.nodeType==3)aLink=aLink.nextSibling;
	       subList=getNextElement(aLink);
		   if(subList&&subList.nodeName=="UL"){
			  subList.style.display="block";
		   }else return;
	  } 
     function closeMenu(){
         subList.style.display="none";
		 bLink.innerHTML=bvalue;
		 bLink.className="alink";
		 document.getElementById("0").className="alink1";
		 document.getElementById("csh").style.display="block";
		 
	 }
	 
}
function getNextElement(node) {
  if(node.nextSibling.nodeType==1) {
	return node.nextSibling;
  }else{
    return getNextElement(node.nextSibling);
  }
  return null;
}

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