function __ValidateField (e, value, validationType) {
//--- Provides general field validation for Ensight forms

	var isIgnore = false;
	var isNumber = false;
	var isPeriod = false;
	var isLetter = false;

	var key = (e.keyCode ? e.keyCode : e.which);

	switch (key) {
		case  8:	//--- back-space
		case  9:	//--- tab key
		case 37:	//--- arrow to L
		case 39:	//--- arrow to R
					isIgnore = true; break;
		case 46:	//--- full-stop
					isPeriod = true; break;
		case 48:	//--- 0
		case 49:	//--- 1
		case 50:	//--- 2
		case 51:	//--- 3
		case 52:	//--- 4
		case 53:	//--- 5
		case 54:	//--- 6
		case 55:	//--- 7
		case 56:	//--- 8
		case 57:	//--- 9
					isNumber = true; break;
		default:	if (((key >= 65) && (key <= 90)) || ((key >= 97) && (key <= 122))) {
						isLetter = true;
					}
					break;
	}

	switch (validationType) {
		case '1':	//--- Numbers only
					if ((isIgnore) || (isNumber)) {
						return true;
					} else {
						if (e.preventDefault) { e.preventDefault (); } else { e.returnValue = false; }
					}
					break;

		case '2':	//--- Decimal numbers only
					if ((isIgnore) || (isNumber) || ((isPeriod) && (value.indexOf ('.') == -1))) {
						return true;
					} else {
						if (e.preventDefault) { e.preventDefault (); } else { e.returnValue = false; }
					}
					break;

		case '3':	//--- Letters only
					if ((isIgnore) || (isLetter)) {
						return true;
					} else {
						if (e.preventDefault) { e.preventDefault (); } else { e.returnValue = false; }
					}
					break;

		case '4':	//--- Numbers and letters only
					if ((isIgnore) || (isNumber) || (isLetter)) {
						return true;
					} else {
						if (e.preventDefault) { e.preventDefault (); } else { e.returnValue = false; }
					}
					break;
	}

}

function __ValidateForm (whichForm) {
//--- Validates the form itself, ensures all mandatory fields are submitted and that email and mobile entries are valid

	var eExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
	var mExp = /^[+0-9]{10,14}$/;

	for (i = 0; i < whichForm.length; i++) {

		if ((whichForm.elements[i].type == 'hidden') && (whichForm.elements[i].name.substr (0, 8) == 'Validate')) {

			ElementToLocate = 'Form' + whichForm.elements[i].name.substr (8, whichForm.elements[i].name.length - 8);
			ValidateMessage = whichForm.elements[i].value.split ('|');

			isValid = false;
			switch (whichForm.elements[ElementToLocate].type) {
				case 'text':		isValid = whichForm.elements[ElementToLocate].value != ''; break;
				case 'password':	isValid = whichForm.elements[ElementToLocate].value != ''; break;
				case 'textarea':	isValid = whichForm.elements[ElementToLocate].value != ''; break;
				case 'hidden':		isValid = whichForm.elements[ElementToLocate].value != ''; break; // test for date fields
				case 'file':		isValid = whichForm.elements[ElementToLocate].value != ''; break;
				case 'select-one':	isValid = whichForm.elements[ElementToLocate].options[whichForm.elements[ElementToLocate].selectedIndex].value != ''; break;
				case 'radio':		for (j = 0; j < whichForm.elements[ElementToLocate].length; j++) {
										if (whichForm.elements[ElementToLocate][j].checked) {
											isValid = true;
										}
									}
									break;
				case 'select-multiple':
									for (j = 0; j < whichForm.elements[ElementToLocate].length; j++) {
										if (whichForm.elements[ElementToLocate][j].selected) {
											isValid = true;
										}
									}
									break;
			}
			if ((!isValid) && (ValidateMessage[1])) {
				alert (ValidateMessage[1]); if (whichForm.elements[ElementToLocate].type != 'hidden') { whichForm.elements[ElementToLocate].focus (); } return false;
			}

			//--- If we make it past the first test, look for additional checks
			switch (ValidateMessage[0]) {
				case '5':		//--- Email address check
								if ((whichForm.elements[ElementToLocate].value) && (!whichForm.elements[ElementToLocate].value.match (eExp))) {
									alert ('The email address format is incorrect.');
									whichForm.elements[ElementToLocate].focus ();
									return false;
								}
								break;
				case '6':		//--- Mobile telephone check
								if ((whichForm.elements[ElementToLocate].value) && (!whichForm.elements[ElementToLocate].value.match (mExp))) {
									alert ('The mobile number should be numeric, and at least 10 digits long.');
									whichForm.elements[ElementToLocate].focus ();
									return false;
								}
								break;
			}

		}

	}

	return true;

}