//主导航js
var adjustarr = new array();
function navon(cid){
	var onav=document.getelementbyid("channelid"+cid);
	//if(onav!=null)onav.src=t_p+'images/channelid'+cid+'a.gif';
	if(onav!=null)onav.classname="active";
}
function navout(cid){
	if(channelid==cid)return;
	var onav=document.getelementbyid("channelid"+cid);
	//if(onav!=null)onav.src=t_p+'images/channelid'+cid+'.gif';
	if(onav!=null)onav.classname="";
}

function menuon(id)
{
   var isadjust=0;
   var o=document.getelementbyid("menu"+id);
   for(var i=0;i<adjustarr.length; i++)
   {
   		if(adjustarr[i]==id)isadjust=1;
		var o2=document.getelementbyid("menu"+adjustarr[i]);
   		if (o2!=null)o2.style.display="none";
   }
   if (o==null) return;
   if(isadjust==0)
   {
		adjustarr[adjustarr.length]=id;
		/*var p = (screen.width-1002)/2-11;
		var l=o.style.left.substr(0,o.style.left.length-2);
		l=eval(p)+eval(l);
	    o.style.left=l+"px";*/
   }
   o.style.display="";
}

function menuout(id)
{
	var o=document.getelementbyid("menu"+id);
	if (o!=null)o.style.display = "none";
}

function checkwebsearch(form)
{
	if(form.k.value==""){
		alert("搜索时,关键词不能为空!");
		form.k.focus();
		return false;
	}
}