// JavaScript Document
//top change
function SwitchSubmit(tag){
var form=document.topsearchform;
switch(tag){
case "Nav_tag_01":
form.action = "/search!presult.html2";//yaopin
break;
case "Nav_tag_02":
form.action = "/healthfooddetail.html2";//baojianpin
break;
case "Nav_tag_03":
form.action = "/cosdetail.html2";//yaozhuang
break;
case "Nav_tag_04":
form.action = "/promotion/index!Search.html2";//cuxiao
break;
case "Nav_tag_05":
form.action = "/map.html2";//yaodian
break;
case "Nav_tag_06":
form.action = "/jibing!search.html2";//jibing
break;
case "Nav_tag_07":
form.action = "/zhengzhuang!search.html2";//zhuangzhuang
break;

default:
form.action = "/search!presult.html2";//yaopin
break;
}
for(var i=1;i<=7;i++)
	{
		if("Nav_tag_0"+i==tag)
		{			
		   document.getElementById("Nav_tag_0"+i).className='';
		   document.getElementById("Nav_tag_0"+i).className='changeNavtitle2';
		   document.getElementById("Nav_tag_0"+i).style.color='#5a5a5a';
		}
		else
		{
		   document.getElementById("Nav_tag_0"+i).className='';
		   document.getElementById("Nav_tag_0"+i).className='changeNavtitle';
		   document.getElementById("Nav_tag_0"+i).style.color='#5a5a5a';
		}
	}
return true;
}
function Trim(trimstr) 
{ 
return trimstr.replace(/(^\s*)|(\s*$)/g, ""); 
}
function isSearchNull(){
if(document.topsearchform.keywords.value==""){
alert("请输入搜索关键字！");
document.topsearchform.keywords.focus();
return false;
}
}