function checkSearch(MyForm) 
{
	var keyword=trimstring(MyForm.keyword.value);
	if (keyword=="") 
	{ 
		alert("Vui long nhap thong tin de tim kiem"); 
		MyForm.keyword.focus();
		return false; 
	}
	if ((keyword.search("scrip")>=0)||(keyword.search("objec")>=0)||(keyword.search("apple")>=0)||(keyword.search("embe")>=0))
	{
		alert("Thong tin tim kiem khong hop le.");
		MyForm.keyword.focus();
		return false; 
	}
	return true;
}

function checkSearchEN(MyForm) 
{
	var keyword=trimstring(MyForm.keyword.value);
	if (keyword=="") 
	{ 
		alert("Please input your keyword"); 
		MyForm.keyword.focus();
		return false; 
	}
	if ((keyword.search("scrip")>=0)||(keyword.search("objec")>=0)||(keyword.search("apple")>=0)||(keyword.search("embe")>=0))
	{
		alert("Your keyword is not valid.");
		MyForm.keyword.focus();
		return false; 
	}
	return true;
}

function checkSearch_Detail(MyForm) 
{
	var keyword=trimstring(MyForm.keyword.value);
	
	if ((keyword.search("scrip")>=0)||(keyword.search("objec")>=0)||(keyword.search("apple")>=0)||(keyword.search("embe")>=0))
	{
		alert("Thong tin tim kiem khong hop le.");
		MyForm.keyword.focus();
		return false; 
	}
	return true;
}

function doMouseOverMenuLevel2(item)
{
	for(i=0;i<item.children.length;i++) 
	{
		item.children(i).style.cursor='hand'; 
		item.children(i).style.backgroundColor='#FCF8D4'
	}
}
	
function doMouseOutMenuLevel2(item,strBgcolor)
{
	for(i=0;i<item.children.length;i++) 
		item.children(i).style.backgroundColor=strBgcolor
}
	
function doMouseClick(item)
{
	item.firstChild.firstChild.click();
}

function checkFeedbackForm(frmForm)
{
	var fullname;
	var content;
	fullname=trimstring(frmForm.fullname.value);
	if (fullname=="") {
		alert("Vui long nhap ho ten.");
		frmForm.fullname.focus();
		return false;
	}
	if ((fullname.search("scrip")>=0)||(fullname.search("objec")>=0)||(fullname.search("apple")>=0)||(fullname.search("embe")>=0))
	{
		alert("Ho ten khong hop le.");
		frmForm.fullname.focus();
		return false; 
	}
	content=trimstring(frmForm.content.value);
	if (content=="") {
		alert("Vui long nhap noi dung.");
		frmForm.content.focus();
		return false;
	}
	if ((content.search("scrip")>=0)||(content.search("objec")>=0)||(content.search("apple")>=0)||(content.search("embe")>=0))
	{
		alert("Noi dung khong hop le.");
		frmForm.content.focus();
		return false; 
	}
		
	return true;
}

function checkFeedbackFormEN(frmForm)
{
	var fullname;
	var content;
	fullname=trimstring(frmForm.fullname.value);
	if (fullname=="") {
		alert("Please input your fullname.");
		frmForm.fullname.focus();
		return false;
	}
	if ((fullname.search("scrip")>=0)||(fullname.search("objec")>=0)||(fullname.search("apple")>=0)||(fullname.search("embe")>=0))
	{
		alert("Your fullname is not valid.");
		frmForm.fullname.focus();
		return false; 
	}
	content=trimstring(frmForm.content.value);
	if (content=="") {
		alert("Please input your content.");
		frmForm.content.focus();
		return false;
	}
	if ((content.search("scrip")>=0)||(content.search("objec")>=0)||(content.search("apple")>=0)||(content.search("embe")>=0))
	{
		alert("Your content is not valid.");
		frmForm.content.focus();
		return false; 
	}
		
	return true;
}

function Submit_onclick(MyForm)
{ 
	var txtfullname_sender=trimstring(MyForm.fullname_sender.value);
	var txtemail_sender=trimfullstring(MyForm.email_sender.value); 
	var txtfullname_receiver=trimstring(MyForm.fullname_receiver.value); 
	var txtemail_receiver=trimfullstring(MyForm.email_receiver.value); 
	if (txtfullname_sender=="") 
	{ 
		alert ("Vui long cung cap ho ten nguoi gui."); 
		MyForm.fullname_sender.value="";
		MyForm.fullname_sender.focus();
		return false; 
	}
	if (txtemail_sender=="") 
	{ 
		alert ("Vui long cung cap email cua nguoi gui."); 
		MyForm.email_sender.value="";
		MyForm.email_sender.focus(); 
		return false; 
	} 
	if (!isEmail(txtemail_sender))
	{ 
		alert ("Email cua nguoi gui khong hop le."); 
		MyForm.email_sender.focus(); 
		return false; 
	} 
	if (txtfullname_receiver=="") 
	{ 
		alert ("Vui long cung cap ho ten nguoi nhan."); 
		MyForm.fullname_receiver.value="";
		MyForm.fullname_receiver.focus(); 
		return false; 
	} 
	if (txtemail_receiver=="") 
	{ 
		alert ("Vui long cung cap email cua nguoi nhan."); 
		MyForm.email_receiver.value="";
		MyForm.email_receiver.focus(); 
		return false; 
	} 
	if (!isEmail(txtemail_receiver))
	{  
		alert ("Email cua nguoi nhan khong hop le."); 
		MyForm.email_receiver.focus(); 
		return false; 
	} 
	return true; 
}