function recheck()
{ 
if (document.loginForm.uname.value =="")
{
alert("请填写您的用户名！");
document.loginForm.uname.focus();
return false;
}
if (loginForm.pwd.value=="")
{
alert("请输入密码!");
loginForm.pwd.focus();
return false;
}
}
function escape2(str){
  return escape(str).replace(/\+/g,"%2b");
}
function form_submit()
	{
	var url;
if (document.form1.key.value.length<3  && form1.myselectvalue.value == "1") 
	{
	document.form1.key.focus();   		
	alert("错误！\n\nIC型号必须填写并且3位以上！");
	return false;	
	}
if (form1.myselectvalue.value == "1")
	{
	url = "/stock/search.asp?key="+escape2(form1.key.value);
	form1.target="_top";
	}
if (form1.myselectvalue.value == "0")
	{
	url = "/Supply/k/"+escape2(form1.key.value)+"/ec_1.html";
	}
if (form1.myselectvalue.value == "2")
	{
	url = "http://cn.alldatasheet.com/view.jsp?Searchword="+escape2(form1.key.value);
	form1.target="_blank";
	}	
form1.action = url;
return true;
	}