function esEmail()
{
	emailStr=this.sValor;

	var checkTLD=1;
	var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
	var emailPat=/^(.+)@(.+)$/;
	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) {
		this.sMissatge = "Il dominio della email introdotta non è corretto";
		return(false);
	}
	var user=matchArray[1];
	var domain=matchArray[2];

	for (i=0; i<user.length; i++) {
		if (user.charCodeAt(i)>127) {
			this.sMissatge = "L\u0027utente contiene caratteri incorretti";
			return(false);
		}
	}
	for (i=0; i<domain.length; i++) {
		if (domain.charCodeAt(i)>127) {
			this.sMissatge = "Il dominio contiene caratteri incorretti";
			return(false);
	   }
	}
	if (user.match(userPat)==null) {
	    this.sMissatge = "Utente incorretto";
	    return(false);
	}
	var IPArray=domain.match(ipDomainPat);
	if (IPArray!=null) {
		  for (var i=1;i<=4;i++) {
		    if (IPArray[i]>255) {
		        this.sMissatge = "IP incorretto";
				return(false);
		    }
	    }
	    return true;
	}
	var atomPat=new RegExp("^" + atom + "$");
	var domArr=domain.split(".");
	var len=domArr.length;
	for (i=0;i<len;i++) {
		if (domArr[i].search(atomPat)==-1) {
			this.sMissatge = "Dominio incorretto";
			return(false);
		}
	}
	
	/*if (checkTLD && domArr[domArr.length-1].length!=2 && 
		domArr[domArr.length-1].search(knownDomsPat)==-1) {
		this.sMissatge = "Email incorretta";
		return false;
	}*/
	
	atomPat=new RegExp(atom,"g");
	domArr=domain.match(atomPat);
	len=domArr.length;
	if (domArr[domArr.length-1].length<2 || 
	    domArr[domArr.length-1].length>4) {
	   this.sMissatge = "Dominio incorretto";	   
	   return(false);
	}
	
	if (len<2) {
		this.sMissatge = "Dominio non introdotto";
		return(false);
	}
	return true;
}