// JavaScript Document

function reg3()
{
 var d=document.Contactfrm;

if(d.fistname.value == '')
	{
	
		alert("Please enter your first name");
		d.fistname.focus();
		return false;
	}
	if(d.lastname.value == '')
	{
	
		alert("Please enter your last name");
		d.lastname.focus();
		return false;
	}
	if(d.email.value=='')
	{
	
		alert("Please enter email");
		d.email.focus();
		return false;
	}
	if(checkingEmail(d.email.value)==false)
	   {
		 alert("Invalid Email, Please re-enter");
		 d.email.focus();
		 return false;
	   }
	   if(d.phone.value=='')
	{
	
		alert("Please enter phone number");
		d.phone.focus();
		return false;
	}
	  if(d.comments.value=='')
	{
	
		alert("Please enter your comment");
		d.comments.focus();
		return false;
	}
	 
	
		 
if(d.securitycode.value=='')
	{
	
		alert("Please enter security code");
		d.securitycode.focus();
		return false;
	}


}


function checkingEmail(emailStr){
	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) {
		return false
	}
	var user=matchArray[1]
	var domain=matchArray[2]
	if (user.match(userPat)==null) {
	    return false
	}
	var IPArray=domain.match(ipDomainPat)
	if (IPArray!=null) {
		  for (var i=1;i<=4;i++) {
		    if (IPArray[i]>255) {
				return false
		    }
	    }
	    return true
	}
	var domainArray=domain.match(domainPat)
	if (domainArray==null) {
		return false
	}
	var atomPat=new RegExp(atom,"g")
	var domArr=domain.match(atomPat)
	var len=domArr.length
	if (domArr[domArr.length-1].length<2 ||
	    domArr[domArr.length-1].length>4) {
		return false
	}
	if (len<2) {
	   return false
	}
	return true;
}	

function onlyint(e)
{
	if (window.event) keynum = e.keyCode;
	else if (e.which) keynum = e.which;

	if (keynum == 0x08) return true;
	else if (keynum == 0x09) return true;
	else if ((keynum == 0x24) || (keynum == 0x2E) ||
                 (keynum == 0x2C) || (keynum == 0x2D)) return true;
	else if ((keynum >= 0x30) && (keynum <=0x39)) return true;
	return false;
}