// JScript 文件
//window.onload()
 function down()
    {
	    if(event.keyCode==13)
	    {
		    search();
		    return false;
	    }
    }
function trim(str) {
   if (str == null) {
    return "";
   }
   return str.replace(/^\s*(.*?)[\s\n]*$/g,'$1');   
} 
 function checkddl(object)
 {
     var tag=window.document.getElementById(object);
     var c="";
     for(var i=0;i<tag.options.length;i++)
      {
         if(tag.options[i].selected)
         {
           if(tag.options[i].value!="")
           {
              c=escape(tag.options[i].value);
           }
         }   
      }
       return c;
 }
  
function search()
{
   var key=document.getElementById("txtkey").value;
   key=trim(key);
   var c=checkddl("ddlclass");
   if(key=="")
   {
      alert("请输入您要搜索的关键字！");
      return false;
   }
  window.location.href="product/searchList.aspx?c="+ c +"&key="+ escape(key);
}

function checkuser()
{
    var url="checkusername.aspx?t=1";
    loadXMLDoc(url);
    return true;
}
function checkmember()
{
    var url="../checkusername.aspx?t=2";
    loadXMLDoc_member(url);
    return true;
}

 function loadXMLDoc(url)   
{   
	if (window.XMLHttpRequest)   
	{   
		xmlHttp  = new XMLHttpRequest(); 
	}   
	else if (window.ActiveXObject)   
	{   
		xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); 
	}  
	xmlHttp.onreadystatechange = callBack_checkname;   
	xmlHttp.open("get",url,true);   
	xmlHttp.send(null);  
}   
function callBack_checkname()
{
	if (xmlHttp.readyState == 4)
	{
	    var isValid =xmlHttp.responseText;
	    if(isValid!="")
	    {
           document.getElementById("sinfo").innerHTML=isValid;
	    }
		//else document.getElementById("sinfo").innerHTML="您好！欢迎来到地球人商城！<a href=\"login.aspx\" class=\"linkdenglu\">【请登陆】</a> <a href=\"register.aspx\" class=\"linkdenglu\">【免费注册】</a> 购物车有0种商品 | ";
	}
}