var info
var keywords;

function ChkSubmit()
{
    var sk=event.keyCode;
    //alert(sk)
    if(sk==13)
    {
		document.getElementById ("ImgSeach").click();
        return false;
     }
}
function searchProduct()
{
	info=document.getElementById("txtSearch").value;
	addCookie("txtkeywordsCookie",info,0);
	location.href="../product/search.asp?keywords="+encodeURI(info);
}
function addCookie(objName,objValue,objHours){//添加cookie    
	var str = objName + "=" + escape(objValue);
    if(objHours > 0){//为0时不设定过期时间，浏览器关闭时cookie自动消失
     var date = new Date();
     var ms = objHours*3600*1000;
     date.setTime(date.getTime() + ms);
     str += "; expires=" + date.toGMTString();
    }
    var str = objName + "=" + escape(objValue);
    document.cookie = str;
    //alert("添加cookie成功");
   }
  
   function getTheCookie(objName){//获取指定名称的cookie的值
    var arrStr = document.cookie.split("; ");
    for(var i = 0;i < arrStr.length;i ++){
     var temp = arrStr[i].split("=");
     if(temp[0] == objName) return unescape(temp[1]);
    } 
   }
keywords=getTheCookie("txtkeywordsCookie");
if (keywords==null || keywords=="undefined")
{
	keywords="产品搜索"
}
else
{
	//alert(keywords);
}
document.writeln('<form id="search"  onSubmit="return false">')
document.writeln('<input type="text" id="txtSearch" value="'+keywords+'" onkeydown="return ChkSubmit()" /><input type="image" src="../images/goSearch.jpg"  id="ImgSeach" onclick="searchProduct()"/>')
document.writeln('</form>')