function Validate (pRegForm)
{
	
if ((pRegForm.e_type[0].checked == false) && (pRegForm.e_type[1].checked == false))
    {
        alert ( "Please pick event type" );
        return false;
    }

    var mikExp = /[\\@\\\#\^\*\[\]\+\_\{\}\`\~\=\|]/;

	if (IsEmpty(pRegForm.sender.value))
		{
			   alert ("email needs to be entered");
			   pRegForm.sender.focus();
			   return false;
		}
	if (IsEmpty(pRegForm.message.value))
		{
			   alert ("Message needs to be entered");
			   pRegForm.message.focus();
			   return false;
		}
		
	 if (pRegForm.message.value.search(mikExp) != -1) {
		    alert("Sorry, but the following characters\n\r\n\r@ ^ * # [ ] \\ { + } ` ~ = | \n\r\n\rare not allowed\n");
		    pRegForm.message.focus();
		    return false;
			
			}
			
	if (IsEmpty(pRegForm.school.value))
		{
			   alert ("Organization needs to be entered");
			   pRegForm.school.focus();
			   return false;
		}
		
	if (pRegForm.school.value.search(mikExp) != -1) {
		    alert("Sorry, but the following characters\n\r\n\r@ ^ * # [ ] \\ { + } ` ~ = | \n\r\n\rare not allowed\n");
		    pRegForm.school.focus();
		    return false;
			
	   }	
		
	if (IsEmpty(pRegForm.city.value))
		{
			   alert ("City needs to be entered");
			   pRegForm.city.focus();
			   return false;
		}
	
		if (pRegForm.city.value.search(mikExp) != -1) {
		    alert("Sorry, but the following characters\n\r\n\r@ ^ * # [ ] \\ { + } ` ~ = | \n\r\n\rare not allowed\n");
		    pRegForm.city.focus();
		    return false;
			
	   }	
	   
	return emailCheck(pRegForm.sender.value)		

		
	function IsEmpty(psText)
		{
		 	if (psText == "")
			   return true;
			else
			{
			 	var iNumberOfSpaces = 0;
			
				for (var iIndex=0;iIndex<psText.length;iIndex++)
				{
				 	if (psText.substr(iIndex,1) == " ")
					   iNumberOfSpaces++;
				}
				return (iNumberOfSpaces >= psText.length);
			}
			
		}	
}

function emailCheck (emailStr) {
	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) {
		alert("Email address seems incorrect (check @ and .'s)");
		f1.sender.focus();
		return false;
	}
	
	var user=matchArray[1];
	var domain=matchArray[2];
	
	for (i=0; i<user.length; i++) {
	if (user.charCodeAt(i)>127) {
	alert("Ths username contains invalid characters.");
	f1.sender.focus();
	return false;
	   }
	}
	for (i=0; i<domain.length; i++) {
	if (domain.charCodeAt(i)>127) {
	alert("Ths domain name contains invalid characters.");
	f1.sender.focus();
	return false;
	   }
	}
	
	
	if (user.match(userPat)==null) {
	
	alert("The username doesn't seem to be valid.");
	f1.sender.focus();
	return false;
	}
	
	/* if the e-mail address is at an IP address (as opposed to a symbolic
	host name) make sure the IP address is valid. */
	
	var IPArray=domain.match(ipDomainPat);
	if (IPArray!=null) {
	
	// this is an IP address
	
	for (var i=1;i<=4;i++) {
	if (IPArray[i]>255) {
	alert("Destination IP address is invalid!");
	f1.sender.focus();
	return false;
	   }
	}
	return true;
	}
	
	// Domain is symbolic name.  Check if it's valid.
	 
	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) {
	alert("The domain name does not seem to be valid.");
	f1.sender.focus();
	return false;
	   }
	}
	
	/* domain name seems valid, but now make sure that it ends in a
	known top-level domain (like com, edu, gov) or a two-letter word,
	representing country (uk, nl), and that there's a hostname preceding 
	the domain or country. */
	
	if (checkTLD && domArr[domArr.length-1].length!=2 && 
	domArr[domArr.length-1].search(knownDomsPat)==-1) {
	alert("The address must end in a well-known domain or two letter " + "country.");
	f1.sender.focus();
	return false;
	}
	
	// Make sure there's a host name preceding the domain.
	
	if (len<2) {
	alert("This address is missing a hostname!");
	f1.sender.focus();
	return false;
	}
	
	// If we've gotten this far, everything's valid!
	input_box=confirm("Confirm if your email address is correct:\" " +f1.sender.value + 	"\" ");
		if (input_box==true){ 
		return true
	}else{
		return false
	}
	//return true;
	}