// E-Mail Verification Script 1

<!-- Hide from non-JavaScript browsers

	function emailCheck (emailStr) 
	{
		var emailPat=/^(.+)@(.+)$/
		var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
		var validChars="\[^\\s" + specialChars + "\]"
		var quotedUser="(\"[^\"]*\")"
		var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
		var atom=validChars + '+'
		var word="(" + atom + "|" + quotedUser + ")"
		var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
		var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")
		var matchArray=emailStr.match(emailPat)
		if (matchArray==null) 
		{
			alert("Invalid E-mail Address! Please try again.")
			return false
		}

		var user=matchArray[1]
		var domain=matchArray[2]
		if (user.match(userPat)==null) 
		{
			alert("Invalid E-mail Address! Please try again.")
			return false
		}

		var IPArray=domain.match(ipDomainPat)
		if (IPArray!=null) 
		{
			for (var i=1;i<=4;i++) 
			{
				if (IPArray[i]>255) 
				{
					alert("Invalid E-mail Address! Please try again.")
					return false
				}
			}
			return true
		}

		var domainArray=domain.match(domainPat)
		if (domainArray==null) 
		{
			alert("Invalid E-mail Address! Please try again.")
			return false
		}

		var atomPat=new RegExp(atom,"g")
		var domArr=domain.match(atomPat)
		var len=domArr.length
		if (domArr[domArr.length-1].length<2 || domArr[domArr.length-1].length>3) 
		{
			alert("Invalid Entry! Please try again.")
			return false
		}

		if (len<2)
		{
			var errStr="Invalid E-mail Address! Please try again."
			alert(errStr)
			return false
		}
		return true;
	}

// Stop hiding -->