function verify(form) 
{
	var passed = false;
	var blnRetval, intAtSign, intDot, intComma, intSpace, intLastDot, intDomain, intStrLen;
	if (form.Email)
	{
		var indirizzo=form.Email.value;
		intAtSign=form.Email.value.indexOf("@");
		intDot=form.Email.value.indexOf(".",intAtSign);
		intComma=form.Email.value.indexOf(",");
		intSpace=form.Email.value.indexOf(" ");
		intLastDot=form.Email.value.lastIndexOf(".");						
		intDomain=intDot-intAtSign;
		intStrLen=form.Email.value.length;
		// check personalizzato
		var strChars=":;#[]§!()=+\<\>|\\'\"";
	
		for (i=0; i<strChars.length; i++)
		{
			//document.write(strChars.charAt(i)+' ');
			if (indirizzo.indexOf(strChars.charAt(i))!=-1)
			{
				alert("You have not entered a valid email address.");
           		form.Email.focus();
           		passed = false;
				return passed;
			}
		}
		// *** CHECK FOR BLANK EMAIL VALUE
		if (form.Email.value == "" ) 
		{
			alert("You have not entered an email address.");
			form.Email.focus();
			passed = false;
		}
		// **** CHECK FOR THE  @ SIGN?  
		else if (intAtSign == -1)
		{
			alert("Your email address is missing the \"@\".");
			form.Email.focus();
			passed = false;
		}
		// **** Check for commas ****
		else if (intComma != -1)
		{
			alert("Email address cannot contain a comma.");
			form.Email.focus();
			passed = false;
		}
		// **** Check for a space ****
		else if (intSpace != -1)
		{
			alert("Email address cannot contain spaces.");
			form.Email.focus();
			passed = false;
		}
		// **** Check for char between the @ and dot, chars between dots, and at least 1 char after the last dot ****
		else if ((intDot <= 2) || (intDomain <= 1)  || (intStrLen-(intLastDot+1) < 2)) 
		{
			alert('Please enter a valid Email address.\n' + form.Email.value + " is invalid.");                                             
			form.Email.focus();                                                     
			passed = false;
		}               
		else
		{
			passed = true;  
		}
	}
	else 
	{
		passed = true;
	}
	return passed;
}