function changeNav(n){
	 for(i=1;i<=8;i++){
		 document.getElementById('header_nav_a'+i).className="";
		 document.getElementById('header_nav_sec_div'+i).className='notsee';
	  }
	 document.getElementById('header_nav_sec_div'+n).className='header_nav_secdiv_'+n;
	
	 document.getElementById('header_nav_a'+n).className="header_nav_a_current";    
	}
	
	function check_search()
      {
          var drp= '<%=this.txt_search.ClientID %>';// document.getElementById('nav_input').childNodes[1]; 
          var drp3=document.getElementById(drp);

	        if(drp3.value==null || drp3.value==""||drp3.value=="Products Search:")
	        {
                window.alert("Please Input a keyword!");
                drp3.select();
                return false;
	         }
	         else
	         {
	            return true;
	         }
	        	
      }
      function input_change(a)
      {
        
        if(a.value==null || a.value=="")
        {
            a.value="Products Search:";
        }
      }
      
    function getCookie(name)
    {
        var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)");
        if(arr=document.cookie.match(reg)) return unescape(arr[2]);
        else return "";
    }
	
	
	
	<!--//--><![CDATA[//><!--
                    //图片滚动列表 mengjia 070816
                    var Speed = 1; //速度(毫秒)
                    var Space = 5; //每次移动(px)
                    var PageWidth = 161; //翻页宽度
                    var fill = 0; //整体移位
                    var MoveLock = false;
                    var MoveTimeObj;
                    var Comp = 0;
                    var AutoPlayObj = null;
                    GetObj("List2").innerHTML = GetObj("List1").innerHTML;
                    GetObj('ISL_Cont').scrollLeft = fill;
                    GetObj("ISL_Cont").onmouseover = function(){clearInterval(AutoPlayObj);}
                    GetObj("ISL_Cont").onmouseout = function(){AutoPlay();}
                    AutoPlay();
                    function GetObj(objName){if(document.getElementById){return eval('document.getElementById("'+objName+'")')}else{return eval('document.all.'+objName)}}
                    function AutoPlay(){ //自动滚动
                     clearInterval(AutoPlayObj);
                     AutoPlayObj = setInterval('ISL_GoDown();ISL_StopDown();',5000); //间隔时间
                    }
                    function ISL_GoUp(){ //上翻开始
                     if(MoveLock) return;
                     clearInterval(AutoPlayObj);
                     MoveLock = true;
                     MoveTimeObj = setInterval('ISL_ScrUp();',Speed);
                    }
                    function ISL_StopUp(){ //上翻停止
                     clearInterval(MoveTimeObj);
                     if(GetObj('ISL_Cont').scrollLeft % PageWidth - fill != 0){
                      Comp = fill - (GetObj('ISL_Cont').scrollLeft % PageWidth);
                      CompScr();
                     }else{
                      MoveLock = false;
                     }
                     AutoPlay();
                    }
                    function ISL_ScrUp(){ //上翻动作
                     if(GetObj('ISL_Cont').scrollLeft <= 0){GetObj('ISL_Cont').scrollLeft = GetObj('ISL_Cont').scrollLeft + GetObj('List1').offsetWidth}
                     GetObj('ISL_Cont').scrollLeft -= Space ;
                    }
                    function ISL_GoDown(){ //下翻
                     clearInterval(MoveTimeObj);
                     if(MoveLock) return;
                     clearInterval(AutoPlayObj);
                     MoveLock = true;
                     ISL_ScrDown();
                     MoveTimeObj = setInterval('ISL_ScrDown()',Speed);
                    }
                    function ISL_StopDown(){ //下翻停止
                     clearInterval(MoveTimeObj);
                     if(GetObj('ISL_Cont').scrollLeft % PageWidth - fill != 0 ){
                      Comp = PageWidth - GetObj('ISL_Cont').scrollLeft % PageWidth + fill;
                      CompScr();
                     }else{
                      MoveLock = false;
                     }
                     AutoPlay();
                    }
                    function ISL_ScrDown(){ //下翻动作
                     if(GetObj('ISL_Cont').scrollLeft >= GetObj('List1').scrollWidth){GetObj('ISL_Cont').scrollLeft = GetObj('ISL_Cont').scrollLeft - GetObj('List1').scrollWidth;}
                     GetObj('ISL_Cont').scrollLeft += Space ;
                    }
                    function CompScr(){
                     var num;
                     if(Comp == 0){MoveLock = false;return;}
                     if(Comp < 0){ //上翻
                      if(Comp < -Space){
                       Comp += Space;
                       num = Space;
                      }else{
                       num = -Comp;
                       Comp = 0;
                      }
                      GetObj('ISL_Cont').scrollLeft -= num;
                      setTimeout('CompScr()',Speed);
                     }else{ //下翻
                      if(Comp > Space){
                       Comp -= Space;
                       num = Space;
                      }else{
                       num = Comp;
                       Comp = 0;
                      }
                      GetObj('ISL_Cont').scrollLeft += num;
                      setTimeout('CompScr()',Speed);
                     }
                    }
                    //--><!]]>