function in_array ($needle, $haystack, $strict) {

	

	/* declare variables */

	var $haystackIndex, $boolStrict;

	

	/* set variable -- $haystackIndex */

	$haystackIndex = 0;

	

	/* set variable -- $boolStrict */

	$boolStrict = !!$strict;

	

	/* loop through $nodes */

	while (($haystackIndex < $haystack.length)) {

		

		/* check if $needle is in $haystack */

		if ((($boolStrict) || (typeof $haystack [$haystackIndex] == typeof $needle)) &&

				($haystack [$haystackIndex] == $needle)) {

			

			/* match */

			return true;

		}

		

		/* Increment $haystackIndex by 1 */

		$haystackIndex = $haystackIndex + 1;

	}

	

	/* no match */

	return false;

}



function validateDate ($date) {

	

	var $dateRegExp = new RegExp ('^\\d{2}\/\\d{2}\/\\d{4}$', 'g');

	

	return $dateRegExp.test ($date);

}



function validateZipCode ($zipCode) {

	

	var $zipCodeRegExp = new RegExp ('^\\d{5}(?:-\\d{4})?$', 'g');

	

	return $zipCodeRegExp.test ($zipCode);

}



function validPhone ($phone) {

	

	var $phoneRegExp = new RegExp ('^(1\\s*[-\/\.]?)?(\\((\\d{3})\\)|(\\d{3}))\\s*[-\/\.]?\\s*(\\d{3})\\s*[-\/\.]?\\s*(\\d{4})\\s*(([xX]|[eE][xX][tT])\\.?\\s*(\\d+))*$', 'g');

	

	return $phoneRegExp.test ($phone);

}



function validEmail ($email) {

	

	var $emailRegExp = new RegExp ('\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*([,;]\\s*\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*)*', 'g');

	

	return $emailRegExp.test ($email);

}



function validURL ($url) {

	

	var $urlRegExp = new RegExp ('^((http|ftp|https):\\/\\/)?[\\w\\-_]+(\.[\\w\\-_]+)+([\\w\\-\\.,@?^=%&amp;:/~\+#]*[\\w\\-\\@?^=%&amp;/~\\+#])?$', 'g');

	

	return $urlRegExp.test ($url);

}



function validate ($form) {

	

	/* declare variables */

	var $node, $nodeIndex, $nodeName, $nodes;

	var $nodeInputType, $nodeNameAttr, $nodeValue;

	var $nodeNameAttrs, $nodesByNodeNameAttr;

	var $nodesByNodeNameAttrIndex, $noInput, $ignoreOtherExtras;

	var $nameAttrParts, $nameAttrPart, $namePartIndex;

	var $namePartExtras, $alertFirstNode, $alertMessages;

	var $nodeNameAttrName, $namePartIndex, $isRequired;

	var $nodesByNodeNameAttr2;

	

	/* set variable -- $nodes */

	$nodes = $form.elements;

	

	/* set variable -- $nodeNameAttrs */

	$nodeNameAttrs = [];

	

	/* set variable -- $alertMessages */

	$alertMessages = [];

	

	/* loop through $nodes */

	for (($nodeIndex = 0); ($nodeIndex < $nodes.length); ($nodeIndex = $nodeIndex + 1)) {

		

		/* set variable -- $node */

		$node = $nodes [$nodeIndex];

		

		/* set variable -- $nodeName */

		$nodeName = $node.nodeName.toLowerCase ();

		

		/* set variable -- $nodeNameAttr */

		$nodeNameAttr = $node.getAttribute ('name');

		

		/* check if not null -- $nameAttr */

		if (($nodeNameAttr != null)) {

			

			/* switch -- $nodeName */

			switch (($nodeName)) {

				

				/* skip these nodes */

				case 'button'		: 

				case 'fieldset'	: continue;

				

				/* validate -- input */

				case 'input'		: 

					

					/* set variable -- $nodeInputType */

					$nodeInputType = $node.type.toLowerCase ();

					

					/* switch -- $nodeInputType */

					switch (($nodeInputType)) {

						

						/* multiple nodes with same name -- execute once */

						case 'checkbox'	: 

						case 'radio'		: 

							

							/* check if not in array already */

							if ((!in_array ($nodeNameAttr, $nodeNameAttrs))) {

								

								/* get all elements by that name */

								$nodesByNodeNameAttr = $nodes [$nodeNameAttr];

								

								/* check if array */

								if (($nodesByNodeNameAttr.length)) {

									

									/* set variable -- $noInput */

									$noInput = true;

									

									/* set variable -- $nodesByNodeNameAttrIndex */

									$nodesByNodeNameAttrIndex = 0;

									

									/* loop through $nodesByNodeNameAttr */

									while (($nodesByNodeNameAttrIndex < $nodesByNodeNameAttr.length)) {

										

										/* check if checked */

										if (($nodesByNodeNameAttr [$nodesByNodeNameAttrIndex].checked)) {

										

											/* set variable -- $noInput */

											$noInput = false;

											

											/* set variable -- $nodeValue */

											$nodeValue = $nodesByNodeNameAttr [$nodesByNodeNameAttrIndex].value;

											

											/* break out */

											break;

										}

										

										/* Increment $nodesByNodeNameAttrIndex by 1 */

										$nodesByNodeNameAttrIndex = $nodesByNodeNameAttrIndex + 1;

									}

								} else { /* single element */

									

									/* set variable -- $noInput */

									$noInput = true;

									

									/* check if checked */

									if (($nodesByNodeNameAttr.checked)) {

										

										/* set variable -- $noInput */

										$noInput = false;

										

										/* set variable -- $nodeValue */

										$nodeValue = $nodesByNodeNameAttr.value;

									}

								}

								

								/* add nodeNameAttr to nodeNameAttrs */

								$nodeNameAttrs [$nodeNameAttrs.length] = $nodeNameAttr;

							} else {

								

								/* set variable -- $noInput */

								$noInput = false;

							}

							

							/* break out of switch */

							break;

						

						/* text and password */

						case 'password'		: 

						case 'text'			: 

							$nodeValue = $node.value;

							break;

						

						/* skip these types of node */

						case 'button'		: 

						case 'file'			: 

						case 'hidden'		: 

						case 'image'		: 

						case 'reset'		: 

						case 'submit'		: continue;

					}

					

					/* break out of switch */

					break;

				

				/* validate -- select */

				case 'select'		: 

					

					/* set variable -- $nodeValue */

					$nodeValue = $node.options [$node.selectedIndex].value;

					

					/* break out of switch */

					break;

				

				/* validate -- textare */

				case 'textarea'	: 

					

					/* set variable -- $nodeValue */

					$nodeValue = $node.value;

					

					/* break out of switch */

					break;

			}

			

			/* set variable -- $nameAttrParts */

			$nameAttrParts = $nodeNameAttr.split ('+');

			

			/* set variable -- $nodeNameAttrName */

			$nodeNameAttrName = $nameAttrParts [0].split ('_').join (' ');

			

			$isRequired = false;

			

			if ((in_array ('r', $nameAttrParts))) {

				

				if (($nodeName == 'input') && (($nodeInputType == 'checkbox') || ($nodeInputType == 'radio'))) {

					

					if (($noInput)) {

						$alertMessages [$alertMessages.length] = 'The ' + $nodeNameAttrName + ' field is required.';

					}

				} else if (!$nodeValue) {

					

					$alertMessages [$alertMessages.length] = 'The ' + $nodeNameAttrName + ' field is required.';

				}

				

				$isRequired = true;

			}

			

			if (($isRequired) || ((!$nodeValue) || ($noInput))) {

				

				/* set variable -- $ignoreOtherExtras */

				$ignoreOtherExtras = false;

				

				/* conditional check check */

				if ((in_array ('cnd', $nameAttrParts))) {

					

					/* set variable -- $ignoreOtherExtras */

					$ignoreOtherExtras = true;

				}

				

				/* loop through $nameAttrParts -- start at 1 */

				for (($namePartIndex = 1); ($namePartIndex < $nameAttrParts.length); ($namePartIndex = $namePartIndex + 1)) {

					

					/* set variable -- $nameAttrPart */

					$nameAttrPart = $nameAttrParts [$namePartIndex];

					

					/* set variable -- $namePartExtras */

					$namePartExtras = $nameAttrPart.split ('-');

					

					/* set variable -- $nameAttrPart */

					$nameAttrPart = $namePartExtras [0].toLowerCase ();

					

					/* set variable -- $namePartExtras */

					$namePartExtras = $namePartExtras.slice (1);

					

					/* switch -- $nameAttrPart */

					switch (($nameAttrPart)) {

						

						case 'd': // date

							if ((!$ignoreOtherExtras) && (!validateDate ($nodeValue))) {

								$alertMessages [$alertMessages.length] = 'The ' + $nodeNameAttrName +

									' field does not satisfy a valid date structure.';

							}

							break;

						case 'z': // zipcode

							if ((!$ignoreOtherExtras) && (!validateZipCode ($nodeValue))) {

								$alertMessages [$alertMessages.length] = 'The ' + $nodeNameAttrName +

									' field does not satisfy a valid zipcode structure.';

							}

							break;

						case 'e': // email

							if ((!$ignoreOtherExtras) && (!validEmail ($nodeValue))) {

								$alertMessages [$alertMessages.length] = 'The ' + $nodeNameAttrName +

									' field does not satisfy a valid email structure.';

							}

							break;

						case 'p': // phone

							if ((!$ignoreOtherExtras) && (!validPhone ($nodeValue))) {

								$alertMessages [$alertMessages.length] = 'The ' + $nodeNameAttrName +

									' field does not satisfy a valid phone structure.';

							}

							break;

						case 'u': // url

							if ((!$ignoreOtherExtras) && (!validURL ($nodeValue))) {

								$alertMessages [$alertMessages.length] = 'The ' + $nodeNameAttrName +

									' field does not represent a valid URL string.';

							}

							break;

						case 'n': // number -- optionals: unsigned

							if ((!$ignoreOtherExtras) && (isNaN (parseInt ($nodeValue)))) {

								$alertMessages [$alertMessages.length] = 'The ' + $nodeNameAttrName +

									' must be a of a number format.';

							} else if ((!$ignoreOtherExtras) && ($namePartExtras) && ($namePartExtras [0] == 'u') &&

								($nodeValue.charAt (0) == '-')) {

								$alertMessages [$alertMessages.length] = 'The ' + $nodeNameAttrName +

									' must be a of a non-negative number format.';

							}

							break;

						case 'cndt': // conditional

							

							$nodesByNodeNameAttr2 = $nodes [$namePartExtras [0].split ('__').join ('+')];

							if ($nodesByNodeNameAttr2) {

								if ($nodesByNodeNameAttr2.length) {

									$nodesByNodeNameAttrIndex = 0;

									while (($nodesByNodeNameAttrIndex < $nodesByNodeNameAttr2.length)) {

										

										/* check if checked */

										if ((($nodesByNodeNameAttr2 [$nodesByNodeNameAttrIndex].checked) || ($nodesByNodeNameAttr2 [$nodesByNodeNameAttrIndex].selected)) &&

											($nodesByNodeNameAttr2 [$nodesByNodeNameAttrIndex].value == $namePartExtras [1].split ('__').join ('+').split ('_').join (' '))) {

											

											if (($nodeName == 'input') && (($nodeInputType == 'checkbox') || ($nodeInputType == 'radio'))) {

												

												if (($noInput)) {

													$alertMessages [$alertMessages.length] = 'The ' + $nodeNameAttrName +

														' cannot be left blank';

												}

											} else if (!$nodeValue) {

												

												$alertMessages [$alertMessages.length] = 'The ' + $nodeNameAttrName +

													' cannot be left blank';

											}

										}

										

										/* Increment $nodesByNodeNameAttrIndex by 1 */

										$nodesByNodeNameAttrIndex = $nodesByNodeNameAttrIndex + 1;

									}

								} else {

									

									if (($nodesByNodeNameAttr2.value == $namePartExtras [1].split ('__').join ('+').split ('_').join (' '))) {

										

										if (($nodeName == 'input') && (($nodeInputType == 'checkbox') || ($nodeInputType == 'radio'))) {

											

											if (($noInput)) {

												$alertMessages [$alertMessages.length] = 'The ' + $nodeNameAttrName +

													' cannot be left blank';

											}

										} else if (!$nodeValue) {

											

											$alertMessages [$alertMessages.length] = 'The ' + $nodeNameAttrName +

												' cannot be left blank';

										}

									}

								}

							}

							break;

					}

				}

			}

			

			/* Set the first node to focus upon error  */

			if (($alertMessages.length) && (!$alertFirstNode)) $alertFirstNode = $node;

		}

	}

	

	/* check if we have something to alert to user */

	if (($alertMessages.length)) {

		

		/* alert the user */

		alert ($alertMessages.join ('\n'));

		

		/* focus the node if set */

		if (($alertFirstNode)) $alertFirstNode.focus ();

		

		/* cancel form submission */

		return false;

	}

	

	return true;

	

}