/***********************************************
* Required field(s) validation v1.10- By NavSurf
* Visit Nav Surf at http://navsurf.com
* Visit http://www.dynamicdrive.com/ for full source code
***********************************************/

function formValidate (formobj) {
	// Enter name of mandatory fields
	var fieldRequired = Array("contact-name", "telephone-number", "company-address", "postcode", "how-did-you-find-us", "security_code");
	// Enter field description to appear in the dialog box
	var fieldDescription = Array("Contact Name", "Telephone Number", "Company Address", "Post Code", "How did you find us?", "Security Code");
	// dialog message
	var alertMsg = "Please complete the following fields:\n";
	
	var l_Msg = alertMsg.length;
	
	for (var i = 0; i < fieldRequired.length; i++){
		var obj = formobj.elements[fieldRequired[i]];
		if (obj){
			if (obj.type == null){
				var blnchecked = false;
				for (var j = 0; j < obj.length; j++){
					if (obj[j].checked){
						blnchecked = true;
					}
				}
				if (!blnchecked){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				continue;
			}

			switch(obj.type){
			case "select-one":
				if (obj.selectedIndex == 0 || obj.options[obj.selectedIndex].text == ""){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}

				// if the visitor has selected "Other..."
				if ((obj.name == "how-did-you-find-us" && obj.value == "other")){
					// ... and if the visitor hasn't entered something into the text field...
					if (formobj.elements['specify-where-you-found-us'].value == "" || formobj.elements['specify-where-you-found-us'].value == null){
						alertMsg += " - " + fieldDescription[i] + " Please specify" + "\n";
					}
				}

				break;
			case "select-multiple":
				if (obj.selectedIndex == -1){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			case "text":
			case "textarea":
				if (obj.value == "" || obj.value == null){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			default:
			}
		}
	}

	if (alertMsg.length == l_Msg){
		return true;
	}else{
		alert(alertMsg);
		return false;
	}
}