//***********************************BASIC FUNCTIONS***********************************//
var ErrorMsg = "";
var Elements = new Array();

function non_blank(sForm, sField, sMsg) {												// SYNTAX: non_blank(form's name, field's name, error message);
	var objControl = eval("document." + sForm + "." + sField);

	if (trim_string(objControl.value).length < 1) {
		if (sMsg == "") {
			return false;
		} else {
			ErrorMsg = ErrorMsg + "\n  -  " + sMsg;
		}

	} else {
		return true;
	}
}

function valid_email(sForm, sField, sMsg, bRequired) {									// SYNTAX: valid_email(form's name, field's name, error message);
	var objControl = eval("document." + sForm + "." + sField);
	var bContents = non_blank(sForm, sField, "");
	var bCheck = 0;

	if (objControl.value.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1) {
		bCheck = true;
	} else {
		bCheck = false;
	}
	
	if (bRequired && !bContents && !bCheck) {
		ErrorMsg = ErrorMsg + "\n  -  " + sMsg;
	} else if (bRequired && bContents && !bCheck) {
		ErrorMsg = ErrorMsg + "\n  -  " + sMsg;
	} else if (!bRequired && bContents && !bCheck) {
		ErrorMsg = ErrorMsg + "\n  -  " + sMsg;
	}
}


//**********************************STRING FUNCTIONS***********************************//

function trim_string(string) {
	if (string.length != "") {
		return string.replace(/\s+/g, "");
	} else {
		return string;
	}
}

//***********************************ERROR MESSAGES************************************//

var Msg1 = "Field may not contain a zero length value."
var Msg2 = "Passwords may not contain a zero length value or passwords do not correspond."
var Msg3 = "Field does not contain a valid email address."
var Msg4 = "Field may not contain a zero length value or it does not contain a valid credit card number."
var Msg5 = "Field does not contain a valid currency value."
var Msg6 = "Field does not contain a valid integer value."
var Msg7 = "The amount of checkboxes checked are invalid."
var Msg8 = "The amount of options selected are invalid."
var Msg9 = "The option selected is invalid."
var Msg10 = "The date entered is invalid."

// </script>