function validateUnsubscribe()
	{
		if(document.form1.username.value=="")
		{
			alert("Please enter your username")
			document.form1.username.focus();
		}
		else if(document.form1.password.value=="")
		{
			alert("Please enter your password")
			document.form1.password.focus();
		}
		else
		{
		document.form1.submit();
		}
	}
	
	
	function validateForgottenPassword()
	{
	var emailStr = document.form1.emailAddress.value;
	if(!emailCheck(emailStr)){}
	else
	{
	document.form1.submit();
	}
	}
	
	function toggle() 
	{
 	if( document.getElementById("showEmailAlert").style.display=='none' )
 	{
   		document.getElementById("showEmailAlert").style.display = '';
 	}
 	else
 	{
  	 	document.getElementById("showEmailAlert").style.display = 'none';
 	}
	}

	function toggleInit()
	{		
		if(document.form1.emailAlert.checked)
		{
		document.getElementById("showEmailAlert").style.display = '';
		}
		else
		{
		document.getElementById("showEmailAlert").style.display = 'none';
		}
	}

	function clearFromBox()
	{
		document.form1.salaryFrom.value="";
	}
	
	function clearToBox()
	{
		document.form1.salaryTo.value="";
	}
	
	function validateForm()
	{
		var emailStr = document.form1.email.value;
		
		if (document.form1.emailAlert.checked)
		{
		var totalChecked = 0;
   			for (i = 0; i < document.form1.categoryList.options.length; i++) 
   			{
      			if (document.form1.categoryList.options[i].selected) 
      			{
         			totalChecked++;
      			}
  			 }
		}
		
		if(document.form1.firstname.value=="")
		{
			alert("Please enter your firstname")
			document.form1.firstname.focus();
		}
		else if (document.form1.surname.value=="")
		{
			alert("Please enter your surname")
			document.form1.surname.focus();
		}
		else if (document.form1.address.value=="")
		{
			alert("Please enter your address")
			document.form1.address.focus();
		}
		else if (document.form1.postcode.value=="")
		{
			alert("Please enter your postcode")
			document.form1.postcode.focus();
		}
		else if (document.form1.tel.value=="")
		{
			alert("Please enter your telephone number")
			document.form1.tel.focus();
		}
		else if(!emailCheck(emailStr)){}
		
		else if(document.form1.uname.value=="")
		{
			alert("Please enter a username to login with")
			document.form1.uname.focus();
		}
		else if (document.form1.pword.value=="")
		{
			alert("Please enter your password")
			document.form1.pword.focus();
		}
		else if (document.form1.pwordConfirm.value=="")
		{
			alert("Please confirm your password entry")
			document.form1.pwordConfirm.focus()
		}
		else if (document.form1.pword.value != document.form1.pwordConfirm.value)
		{
			alert("Your password entries do not match.\nPlease re-enter")
			document.form1.pword.focus();
		}


			
  			 
		else if ((document.form1.emailAlert.checked)&&(totalChecked =="0"))
		//(document.f1.categoryList.options[document.f1.categoryList.selectedIndex].value=="")
		{
			
			
			if(totalChecked == "0")
			{
			alert("Please choose a job sector for your job email alerts")
			}
		}
		
		else if ((document.form1.FileName.value=="")&&(document.form1.FileName2.value==""))
		{
			alert("Please upload your cv")
		}		
		else
		{
			document.form1.submit();
		}
	}
	
	
	
	function emailCheck (emailStr) {
	
	/* The following variable tells the rest of the function whether or not
	to verify that the address ends in a two-letter country or well-known
	TLD.  1 means check it, 0 means don't. */
	
	var checkTLD=1;
	
	/* The following is the list of known TLDs that an e-mail address must end with. */
	
	var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
	
	/* The following pattern is used to check if the entered e-mail address
	fits the user@domain format.  It also is used to separate the username
	from the domain. */
	
	var emailPat=/^(.+)@(.+)$/;
	
	/* The following string represents the pattern for matching all special
	characters.  We don't want to allow special characters in the address. 
	These characters include ( ) < > @ , ; : \ " . [ ] */
	
	var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
	
	/* The following string represents the range of characters allowed in a 
	username or domainname.  It really states which chars aren't allowed.*/
	
	var validChars="\[^\\s" + specialChars + "\]";
	
	/* The following pattern applies if the "user" is a quoted string (in
	which case, there are no rules about which characters are allowed
	and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
	is a legal e-mail address. */
	
	var quotedUser="(\"[^\"]*\")";
	
	/* The following pattern applies for domains that are IP addresses,
	rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
	e-mail address. NOTE: The square brackets are required. */
	
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
	
	/* The following string represents an atom (basically a series of non-special characters.) */
	
	var atom=validChars + '+';
	
	/* The following string represents one word in the typical username.
	For example, in john.doe@somewhere.com, john and doe are words.
	Basically, a word is either an atom or quoted string. */
	
	var word="(" + atom + "|" + quotedUser + ")";
	
	// The following pattern describes the structure of the user
	
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
	
	/* The following pattern describes the structure of a normal symbolic
	domain, as opposed to ipDomainPat, shown above. */
	
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
	
	/* Finally, let's start trying to figure out if the supplied address is valid. */
	
	/* Begin with the coarse pattern to simply break up user@domain into
	different pieces that are easy to analyze. */
	
	var matchArray=emailStr.match(emailPat);
	
	if (matchArray==null) {
	
	/* Too many/few @'s or something; basically, this address doesn't
	even fit the general mould of a valid e-mail address. */
	
	alert("Email address seems incorrect (check @ and .'s)");
	return false;
	}
	var user=matchArray[1];
	var domain=matchArray[2];
	
	// Start by checking that only basic ASCII characters are in the strings (0-127).
	
	for (i=0; i<user.length; i++) {
	if (user.charCodeAt(i)>127) {
	alert("Ths 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;
	   }
	}
	
	// See if "user" is valid 
	
	if (user.match(userPat)==null) {
	
	// user is not valid
	
	alert("The username doesn't seem to be valid.");
	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!");
	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.");
	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 email address must end in a well-known domain or two letter " + "country.");
	return false;
	}
	
	// Make sure there's a host name preceding the domain.
	
	if (len<2) {
	alert("This email address is missing a hostname!");
	return false;
	}
	
	// If we've gotten this far, everything's valid!
	return true;
	}