function showFocus(obj)
	{
		if(!document.getElementById)
			return; // else do the thing
		obj.style.border = "1px solid #ffcc00";
	}
	function showBlur(obj)
	{
		if(!document.getElementById)
			return; // else do the thing
		obj.style.border = "1px solid #A7A6AA";
	}
	function checksignup() {
		if ( document.mailform.mail_name.value == '' ) {
			window.alert('请输入您姓名!!');
			document.mailform.mail_name.focus();
			return false;
		}
if ( document.mailform.mail_address.value == '' ) {
			window.alert('请输入联系地址!!');
			document.mailform.mail_address.focus();
			return false;
		}
		if ( document.mailform.mail_tel.value == '' ) {
			window.alert('请输入您的联系电话!!');
			document.mailform.mail_tel.focus();
			return false;
		}
		if ( document.mailform.mail_email.value == '' ) {
			window.alert('请输入Email地址!!');
			document.mailform.mail_email.focus();
			return false;
		}
           if ( document.mailform.mail_email.value.length> 0 &&!document.mailform.mail_email.value.indexOf("@")==-1|document.mailform.mail_email.value.indexOf(".")==-1 ) {
			window.alert('您所输入的电子邮件格式不正确!!');
			document.mailform.mail_email.focus();
			return false;
		}
		if ( document.mailform.mail_message.value == '' ) {
			window.alert('请填写留言内容!!');
			document.mailform.mail_message.focus();
			return false;
		}
		if ( document.mailform.mail_message.value.length<10) {
			window.alert('您的留言内容太简单了!!');
			document.mailform.mail_message.focus();
			return false;
		}
		return true;
	}
	//-->