function requestUrl(){
     var urlObj=window.location;
	     pathname=urlObj.pathname;
		 Item=pathname.replace("/","");
		 len=Item.indexOf(".")
		 Item=Item.substr(0,len);
		 if(Item.indexOf("index")>-1){
		   setCss("index");
		 }else if(Item.indexOf("about")>-1){
			 setCss("about");
			 }else if(Item.indexOf("news")>-1){
				 setCss("news");
				 }else if(Item.indexOf("product")>-1){
					   setCss("product");
					 }else if(Item.indexOf("equipment")>-1){
						setCss("equipment"); 
						 }else if(Item.indexOf("sales")>-1){
							 setCss("sales");
							 }else if(Item.indexOf("message")>-1){
								 setCss("message");
								 }else if(Item.indexOf("contact")>-1){
									setCss("contact"); 
									 }else{
										setCss("index");  
										 }

	}	
function getID(id){
	return typeof id == "string" ? document.getElementById(id) : id;
	}	
function setCss(id){
  if(id=="")return ;
    getID(id).className="selected";
	}