function Post()
{
document.form_search.keyword.focus();
	if ((document.form_search.keyword.value.length<4) && (document.form_search.type.value=="sell"))
	{
		alert("Part number can not be shorter than the length of 4, please correct!");
		document.form_search.keyword.focus();
		return false;
	}	
	
	if (document.form_search.keyword.value=="")
	{
		alert("Please input part number!");
		document.form_search.keyword.focus();
		return false;
	}
	
	return true;
}
function Post1()
{
document.form_search1.keyword.focus();
	if ((document.form_search1.keyword.value.length<4) && (document.form_search1.type.value=="sell"))
	{
		alert("Part number can not be shorter than the length of 4, please correct!");
		document.form_search1.keyword.focus();
		return false;
	}	
	
	if (document.form_search1.keyword.value=="")
	{
		alert("Please input part number!");
		document.form_search1.keyword.focus();
		return false;
	}
	
	return true;
}
function Post2()
{
	if (document.form_search2.keyword.value=="")
	{
		alert("Please input part number!");
		document.form_search2.keyword.focus();
		return false;
	}
	return true;
}