/* Helper Functions */

// Clears the default value of a textbox when clicked.
function clear_default(obj, txt) {
	if(obj.value == txt) {
		obj.value = '';
	}
}

String.prototype.trim = function() {
	return this.replace(/^\s+|\s+$/g,"");
}
String.prototype.ltrim = function() {
	return this.replace(/^\s+/,"");
}
String.prototype.rtrim = function() {
	return this.replace(/\s+$/,"");
}

function isValidEmail(address) {
	var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
	return reg.test(address);
}

function IsNumeric(sText) {
   var ValidChars = "0123456789.";
   var IsNumber=true;
   var Char;

   for (i = 0; i < sText.length && IsNumber == true; i++) { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         IsNumber = false;
         }
   }
   return IsNumber;
}

/**
* Returns the value of the selected radio button in the radio group, null if
* none are selected, and false if the button group doesn't exist
*
* @param {radio Object} or {radio id} el
* OR
* @param {form Object} or {form id} el
* @param {radio group name} radioGroup
*/
function $RF(el, radioGroup) {
    if($(el).type && $(el).type.toLowerCase() == 'radio') {
        var radioGroup = $(el).name;
        var el = $(el).form;
    } else if ($(el).tagName.toLowerCase() != 'form') {
        return false;
    }
 
    var checked = $(el).getInputs('radio', radioGroup).find(
        function(re) {return re.checked;}
    );
    return (checked) ? $F(checked) : null;
}

/*
 * TabbedPane.js v1.0.0 -- Dynamic AJAX Tabs for Prototype
 * Copyright (c) 2007-2008 Jesse Farmer <jesse@20bits.com>
 * Licensed under the MIT license.
 */
 /*
try { Hash.prototype.toObject = Hash.prototype.toObject || function() { return Object.clone(this); } } catch(err) { }

var TabbedPane = function(pane, page_urls, args) {
	var args = $H({asynchronous: true, method: 'post', evalScripts: true}).merge(args).toObject();	
	this.load_page = function(page_id) {
		new Ajax.Updater(pane, page_urls[page_id], args);
	}
	
	for (page_id in page_urls) {
		Event.observe(page_id, 'click', function(e) {
			if ('function' == typeof(args.onClick))
				args.onClick(e);

			for (page_id in page_urls) $(page_id).removeClassName('active');
			this.load_page(Event.element(e).addClassName('active').id);
			Event.stop(e);
		}.bindAsEventListener(this));

		if ($(page_id).hasClassName('active')) { this.load_page(page_id); }
	}
}
*/