var reEmail = /^[a-zA-Z0-9][a-zA-Z0-9.\-\_]*@[a-zA-Z0-9][a-zA-Z0-9.\-\_]*\.[a-zA-Z0-9][a-zA-Z0-9.]*/

function isEmail(s) { return reEmail.test(s); }

function mail(EmailValue){ 
	if (EmailValue.indexOf('http:')>-1 || EmailValue.indexOf('www.')>-1) { 
		return false;
	} else { return true; } 
}