//Advanced Email Check credit-
//By JavaScript Kit (www.javascriptkit.com)
//Over 200+ free scripts here!

var invalidaddress=new Array()
/*
invalidaddress[0]="hotmail"
invalidaddress[1]="rocketmail"
invalidaddress[2]="yahoo"
invalidaddress[3]="zdnetmail"
*/
//extend or shorten this list if neccessary

var testresults
function isemail(chkemail){
var invalidcheck=0;
var str=chkemail
var filter=/^([a-z0-9_-]+(?:\.[a-z0-9_-]+)*)@((?:\w+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
if (filter.test(str)){
var tempstring=str.split("@")
tempstring=tempstring[1].split(".")
for (i=0;i<invalidaddress.length;i++){
	if (tempstring[0]==invalidaddress[i])
	invalidcheck=1
	}
	if (invalidcheck!=1)
		testresults=true
	else{
		alert("Please input a more official email address!")
		testresults=false
	}
	}
	else{
		alert("Please input a valid email address!")
		testresults=false
	}
return (testresults)
}