function validEmail(email) {
	invalidChars = " /:,;";
	if (email == "") {
		return false;
	}
	for (i=0; i<invalidChars.length; i++) {
		badChar = invalidChars.charAt(i);
		if (email.indexOf(badChar,0) != -1) {
			return false;
		}
	}
	atPos = email.indexOf("@",1);
	if (atPos == -1) {
		return false;
	}
	if (email.indexOf("@",atPos+1) != -1) {
		return false;
	}
	periodPos = email.indexOf(".",atPos);
	if (periodPos == -1) {
		return false;
	}
	if (periodPos+3 > email.length)	{
		return false;
	}
	return true;
}
	
function confirmClear(f) {
	var agree =	confirm("Are you sure you want to clear the form?");
	if (agree) {
		eval ("document.forms['"+f+"'].reset()");
		return true;
	}
	else return false;
}

// copyright 1999 Idocs, Inc. http://www.idocs.com
// Distribute this script freely but keep this notice in place
function numbersonly(myfield, e, dec) {
	var key;
	var keychar;
	
	if (window.event)
		key = window.event.keyCode;
	else if (e)
		key = e.which;
	else return true;

	keychar = String.fromCharCode(key);

	// control keys and punctuation
	if ((key==null) || (key==0) || (key==8) || (key==9) || (key==13) || (key==27) || (key==45) || (key==46) || (key==120) || (key==45) || (key==40) || (key==41) || (key==32) || (key==43))
		return true;

	// numbers
	else if ((("0123456789").indexOf(keychar) > -1))
		return true;
	
	// decimal point jump
	else if (dec && (keychar == ".")) {
		myfield.form.elements[dec].focus();
		return false;
	}
	else return false;
}

function confirmLogout() {
	var agree =	confirm("Are you sure you want to log out?");
	if (agree) {
		document.location.href = this.href;
		return true;
	}
	else return false;
}

function checkdata_login() {
	var messg = "";

	if (document.forms['loginFrm'].lusername.value=='')
		messg += "Username \n";
	if (document.forms['loginFrm'].lpw1.value=='')
		messg += "Password \n";

	if (messg=='') {
		return true;
	}
	else {
		messg = "You have left the following required fields blank or\n" + "incomplete, please correct them before continuing:\n\n" + messg;
		alert(messg);
		return false;
	}
}

function checkdata_forgotten1() {
	var messg = "";

	if (!validEmail(document.forms['forgotten_password'].email.value) || (document.forms['forgotten_password'].email.value <= ''))
		messg += "\nPlease provide a valid E-mail Address (eg. name@example.com)";

	if (messg=='') {
		return true;
	}
	else {
		alert(messg);
		document.forms['forgotten_password'].email.focus();
		return false;
	}
}

function checkdata_forgotten2() {
	var messg = "";

	if (document.forms['forgotten_password'].pw_answer.value=='')
		messg += "Please provide an Answer \n";

	if (messg=='') {
		return true;
	}
	else {
		alert(messg);
		return false;
	}
}

function checkdata_edit() {
	var messg = "";
	var messg2 = "";

	if (document.forms['edit'].pw1.value=='')
		messg += "Password \n";
	if (document.forms['edit'].pw2.value=='')
		messg += "Confirm Password \n";
	if (document.forms['edit'].pw_question.value=='')
		messg += "Password Question \n";		
	if (document.forms['edit'].pw_answer.value=='')
		messg += "Password Answer \n";	

	if (document.forms['edit'].salutation.options[document.forms['edit'].salutation.selectedIndex].text == "- select -")
		messg += "Salutation \n"
	if (document.forms['edit'].firstname.value=='')
		messg += "First Name \n";
	if (document.forms['edit'].surname.value=='')
		messg += "Surname \n";
	if (document.forms['edit'].company.value=='')
		messg += "Company \n";
	if ((document.forms['edit'].address1.value=='') && (document.forms['edit'].address2.value=='') && (document.forms['edit'].address3.value==''))
		messg += "Address \n";
	if (document.forms['edit'].city.value=='')
		messg += "City \n";
	if (document.forms['edit'].post_code.value=='')
		messg += "Post Code \n";
	if (document.forms['edit'].tel.value=='')
		messg += "Telephone \n";

	if (document.forms['edit'].pw1.value != document.forms['edit'].pw2.value)
		messg2 += "\nYour passwords do not match";

	if (!validEmail(document.forms['edit'].email.value))
		messg2 += "\nPlease provide a valid E-mail address (eg. name@example.com)";

	if ((messg=='') && (messg2=='')) {
		return true;
	}
	else {
		if (messg == '')
			alert(messg2);
		else {
			messg = "You have left the following required fields blank or\n" + "incomplete, please correct them before continuing:\n\n" + messg + messg2;
			alert(messg);
		}
		return false;
	}
}