function checkform(number)  
{  
if(number==1)
{
	if (feedback.name.value=="")
	{   alert("请输入您的姓名");
		feedback.name.focus();
		return false;
	}
	if (feedback.tel.value=="" && feedback.tel.value.length<7)
	{   alert("请输入您的电话号码");
		feedback.tel.focus();
		return false;
	}
	if (feedback.title.value=="")
	{   alert("请输入留言主题");
		feedback.title.focus();
		return false;
	}
	if (feedback.content.value=="")
	{   alert("请输入留言内容");
		feedback.content.focus();
		return false;
	}
}
else
{
	if (feedback.name.value=="")
	{   alert("Please enter your name");
		feedback.name.focus();
		return false;
	}
	if (feedback.tel.value=="" && feedback.tel.value.length<7)
	{   alert("Please enter your phone number");
		feedback.tel.focus();
		return false;
	}
	if (feedback.title.value=="")
	{   alert("Enter Title");
		feedback.title.focus();
		return false;
	}
	if (feedback.content.value=="")
	{   alert("Please enter Content");
		feedback.content.focus();
		return false;
	}
}
    return true;
}
function SearchOK(number)
{
	if (Search.Proname.value=="")
	{
	if (number==1)
	{
	alert("请输入所要搜索的数据!");
	}
	else{alert("Please enter the data to search!");}
	Search.Proname.focus();
	return false;
	}
	return true;
}
function disMenu(theSubId){
	var theSub = document.getElementById(theSubId);
	if(theSub.style.display == "none"){
		theSub.style.display = "block";
	}else{
		theSub.style.display = "none";
	}
}