function require(names)
			{
				if (checkNames(names))
					return true;
				alert('Please fill in all required inputs marked with *');
				return false;
			}

			function checkNames(names)
			{
				var anArray = names.split(",");
				for (var i = 0; i < anArray.length; i++)
				{
					if (!checkName(anArray[i]))
						return false;
				}
				return true;
			}

			function checkName(name)
			{
				if (name.length == 0)
					return true;
				var inputs = document.forms[0].elements;
				for (var i = 0; i < inputs.length; i++)
				{
					var anInput = inputs[i];
					if ( (anInput != null) && (anInput.name == name) )
					{
						if (checkInput(anInput))
							return true;
					}
				}
				return false;
			}

			function checkInput(anInput)
			{
				var type = anInput.type;
				if ( (type == "text") || (type == "textarea") )
					return checkText(anInput);
				if (type == "radio")
					return checkRadio(anInput);
				if ( (type == "select-one") || (type == "select-multiple") )
					return checkSelect(anInput);
				alert("Unsupported type for required input: " + type);
				return false;
			}

			function checkText(anInput)
			{
				var aString = anInput.value;
				if (aString == null)
					return false;
				return (aString.length > 0);
			}

			function checkRadio(anInput)
			{
				var aBoolean = anInput.checked;
				if (aBoolean == null)
					return false;
				return aBoolean;
			}

			function checkSelect(anInput)
			{
				if (anInput.selectedIndex < 0)
					return false;
				var option = anInput.options[anInput.selectedIndex];
				var aString = option.value;
				if ( (aString != null) && (aString.length > 0) )
					return true;
				aString = option.text;
				if ( (aString != null) && (aString.length > 0) )
					return true;
				return false;
			}