function validate_form( ) 
{ 
	var valid = true; 
	if ( document.info.lastname.value == "" ) 
	{ 
		alert ( "Your Last Name Is Missing." ); 
		valid = false;
	}
	else if ( document.info.firstname.value == "" ) 
	{ 
		alert ( "Your First Name Is Missing." ); 
		valid = false;
	}
	/*
	else if ( document.info.phone.value == "" ) 
	{ 
		alert ( "Your Telephone number Is Missing." ); 
		valid = false;
	}
	*/ 
   return valid;
 
} 

function emailCheck (emailStr)
{
	var checkTLD=0; 
	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("The Email Address Is Invalid"); 
		return false; 
	}
 
	var user=matchArray[1]; 
	var domain=matchArray[2]; 
	for (i=0; i<user.length; i++)
	{ 
		if (user.charCodeAt(i)>127)
		{ 
			alert("The Username Contains Invalid Characters."); 
			return false; 
		} 
	}
	 
	for (i=0; i<domain.length; i++)
	{ 
		if (domain.charCodeAt(i)>127)
		{ 
			alert("Ths Domain Name Contains Invalid Characters."); 
			return false; 
		} 
	} 

	if (user.match(userPat)==null)
	{ 
		alert("The Username Is Invalid."); 
		return false; 
	} 

	var IPArray=domain.match(ipDomainPat); 
	if (IPArray!=null)
	{ 
		for (var i=1;i<=4;i++)
		{ 
			if (IPArray>255)
			{ 
				alert("The Destination IP Address Is Invalid."); 
				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)
		{ 
			alert("The Domain Name Is Invalid."); 
			return false; 
		} 
	} 

	if (checkTLD && domArr[domArr.length-1].length!=2 && 
		domArr[domArr.length-1].search(knownDomsPat)==-1)
	{ 
		alert("The Domain Name Extension Is Invalid"); 
		return false; 
	} 
	if (len<2)
	{ 
		alert("The Address Is Missing A Hostname."); 
		return false; 
	}
	return true;
} 

var counter=0;
 
function isReady()
{
	var _ret;
	if (validate_form() && emailCheck(document.info.email.value))
		_ret=true;
	else
		_ret=false;
	if(_ret)
		if(counter++)
		{
			_ret=false;
			alert('The Form Is Already Being Submitted'); 
		}
		else
			_ret=true;
	return _ret; 
}