function validate(f){
	//return true;
  	if (!check_empty(f.fname.value)){
    		alert('Please enter Name.');
    		f.fname.focus();
		return false;
	}
/*  	if (!check_empty(f.address.value)){
    		alert('Please enter Address.');
    		f.address.focus();
		return false;
	}
  	if (!check_empty(f.city.value)){
    		alert('Please enter City.');
    		f.city.focus();
		return false;
	}
  	if (!check_empty(f.state.value)){
    		alert('Please enter State.');
    		f.state.focus();
		return false;
	}
  	if (!check_empty(f.zipcode.value)){
    		alert('Please enter Zipcode.');
    		f.zipcode.focus();
		return false;
	}
  	if (!check_empty(f.phone.value)){
    		alert('Please enter Telephone.');
    		f.phone.focus();
		return false;
	}
  	if (!check_empty(f.fax.value)){
    		alert('Please enter Fax.');
    		f.fax.focus();
		return false;
	}

  	if (!check_email(f.email.value)){
  		f.email.focus();
  		return false;
	}

  	if (!check_empty(f.comments.value)){
    		alert('Please enter Comments.');
    		f.comments.focus();
		return false;
	}
*/	return true;
}



function check_empty(text){
	return (text.length > 0);
}

function check_length(text,min,max){
	return ((text.length >= min && text.length <= max));
}

function check_email (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)");

		return false;

	}

	var user=matchArray[1];

	var domain=matchArray[2];



	for (i=0; i<user.length; i++)

	{



		if (user.charCodeAt(i)>127 || user.charCodeAt(i) == 39)

		//if (user.charCodeAt(i)>127)

		{

			alert("The Email 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 Email username doesn't seem to be valid.");

		return false;

	}



	var IPArray=domain.match(ipDomainPat);

	if (IPArray!=null)

	{

		for (var i=1;i<=4;i++)

		{

			if (IPArray[i]>255)

			{

				alert("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 does not seem to be valid.");

			return false;

	   	}

	}



	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.");

		return false;

	}



	if (len<2)

	{

		alert("This address is missing a hostname!");

		return false;

	}



	return true;

}