// JavaScript Document
function confirm_check(url)
{
	anser=confirm("Do you sure delect?")
	
	if(anser==true)
		window.location = url
}
function checknumber(o)
{
	message="Chi duoc nhap so"
	if(isNaN(o.value))
	{
		error_message ="* " + message + "\n"
		alert(error_message)
		o.value=''
		//o.select()
		return false
	}
	else return true
}
function checkemty(o,message)
{	
	if(o.value=="")
	{
		o.focus()
		error_message ="* " + message + "\n"
		alert(error_message)
		return true
	}
	else return false
}
function checkemail(e,message)
{
	var emailfilter=/^\w+[\+\.\w-]*@([\w-]+\.)*\w+[\w-]*\.([a-z]{2,4}|\d+)$/i
	var returnval=emailfilter.test(e.value)
	if (returnval==false)
	{
		alert(message)
		e.select()
		return false
	}
	return true
}
function checkpassword(pass,cpass,message)
{
	if(pass.value!=cpass.value)
	{
		alert(message)
		return false
	}
	return true
}