function ValidEmail(id) {
	var elm = document.getElementById(id)
	var val = document.getElementById(id).value
//	var match = /^\S+\@\w+(\.\w+$)|(\.\w+\.\w+$)/.test(val)
	var match=/^\w+[\+\.\w-]*@([\w-]+\.)*\w+[\w-]*\.([a-z]{2,4}|\d+)$/i.test(val)
	if (!match)  {
		elm.style.backgroundColor = "#ff0000"
		elm.focus()
		return false	}
		elm.style.backgroundColor = "#fff"
		return true
}