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

	var allLetters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
	var allNumbers = "1234567890";

	var isIgnore = false;
	var isNumber = false;
	var isLetter = false;
	var isDecimalNumber = false;

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

	switch (key) {
		case  8:	//--- back-space
		case  9:	//--- tab key
		case 13:	//--- enter key
		case 35:	//--- home
		case 36:	//--- end
		case 37:	//--- left arrow
		case 38:	//--- arrow up
		case 39:	//--- right arrow
		case 38:	//--- arrow down
		case 46:	//--- delete
					isIgnore = true; break;
		default:	isNumber = ((allNumbers.indexOf (String.fromCharCode (key)) != -1) || (key >= 48 && key <= 57) || (key >= 96 && key <= 105)) && (!e.shiftKey);
					isLetter = ((allLetters.indexOf (String.fromCharCode (key)) != -1) || (key == 32) || (key == 222));
					isDecimalNumber = ((allNumbers.indexOf (String.fromCharCode (key)) != -1) || (key == 190));
					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) || (isDecimalNumber)) {
						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 ('|');

			if ((!whichForm.elements[ElementToLocate]) || (whichForm.elements[ElementToLocate].disabled == true)) {
				continue;
			}

			isValid = false;
			switch (whichForm.elements[ElementToLocate].type) {
				case 'text':		
				case 'email':		
				case 'tel':			isValid = whichForm.elements[ElementToLocate].value != '';
									ValidateSize = ValidateMessage[2].split (',');
									if ((ValidateSize[1]) && (parseInt (ValidateSize[1]) > 0) && (whichForm.elements[ElementToLocate].value) && (whichForm.elements[ElementToLocate].value.length > parseInt (ValidateSize[1]))) { alert ('Please enter a value with maximum ' + parseInt (ValidateSize[1]) + ' character(s)'); whichForm.elements[ElementToLocate].focus (); return false; }
									if ((ValidateSize[2]) && (parseInt (ValidateSize[2]) > 0) && (whichForm.elements[ElementToLocate].value) && (whichForm.elements[ElementToLocate].value.length < parseInt (ValidateSize[2]))) { alert ('Please enter a value with minimum ' + parseInt (ValidateSize[2]) + ' character(s)'); whichForm.elements[ElementToLocate].focus (); return false; }
									break;
				case 'password':	isValid = whichForm.elements[ElementToLocate].value != '';
									ValidateSize = ValidateMessage[2].split (',');
									if ((ValidateSize[1]) && (parseInt (ValidateSize[1]) > 0) && (whichForm.elements[ElementToLocate].value) && (whichForm.elements[ElementToLocate].value.length > parseInt (ValidateSize[1]))) { alert ('Please enter a value with maximum ' + parseInt (ValidateSize[1]) + ' character(s)'); whichForm.elements[ElementToLocate].focus (); return false; }
									if ((ValidateSize[2]) && (parseInt (ValidateSize[2]) > 0) && (whichForm.elements[ElementToLocate].value) && (whichForm.elements[ElementToLocate].value.length < parseInt (ValidateSize[2]))) { alert ('Please enter a value with minimum ' + parseInt (ValidateSize[2]) + ' character(s)'); whichForm.elements[ElementToLocate].focus (); return false; }
									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 'checkbox':	isValid = whichForm.elements[ElementToLocate].checked == true; break;
				case 'select-one':	isValid = whichForm.elements[ElementToLocate].options[whichForm.elements[ElementToLocate].selectedIndex].value != ''; break;
				case 'radio':		
				case 'select-multiple':	
				default:			if (whichForm.elements[ElementToLocate].length) {
										for (j = 0; j < whichForm.elements[ElementToLocate].length; j++) {
											if (whichForm.elements[ElementToLocate][j].checked) {
												isValid = true;
											}
										}
									}
									break;
			}
			if ((!isValid) && (ValidateMessage[1])) {
				alert (ValidateMessage[1]); if (whichForm.elements[ElementToLocate].type != 'hidden') { try { whichForm.elements[ElementToLocate].focus (); } catch (e) { } } 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;
			}

		}

	}

	if ((whichForm.elements['CAPTCHA']) && (whichForm.elements['CAPTCHA'].value == '')) {
		alert ('Please enter the 6-letter code displayed on the page.');
		whichForm.elements['CAPTCHA'].focus ();
		return false;
	}

	return true;

}