/**
* common.js
*
* @version	1.0.1.2
* @update	19:25 2008/02/07
* @extends	none
*
*/

( function(){

/* ============================================================================== colorRows - 'rowTint'
	Automatic coloured rows | Bite Size Standards
	http://bitesizestandards.com/bites/automatic-coloured-rows
*/
var colorRows = function() {
	var myTR = document.getElementsByTagName('tr');
	for (var i=0;i<myTR.length;i++) {
		if (i%2) {
			myTR[i].className = 'rowTint';
		}
	}
};

/* ============================================================================== initRollovers - 'imgover'
	Standards Compliant Rollover Script
	Author : Daniel Nolan
	http://www.bleedingego.co.uk/webdev.php
*/

var initRollovers = function() {
	if (!document.getElementById) return

	var aPreLoad = new Array();
	var sTempSrc;
	var aImages = document.getElementsByTagName('img');

	for (var i = 0; i < aImages.length; i++) {		
		if (aImages[i].className == 'imgover') {
			var src = aImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace(ftype, '_o'+ftype);

			aImages[i].setAttribute('hsrc', hsrc);
		
			aPreLoad[i] = new Image();
			aPreLoad[i].src = hsrc;
		
			aImages[i].onmouseover = function() {
				sTempSrc = this.getAttribute('src');
				this.setAttribute('src', this.getAttribute('hsrc'));
			}	
		
			aImages[i].onmouseout = function() {
				if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_o'+ftype, ftype);
				this.setAttribute('src', sTempSrc);
			}
		}
	}
};

/* ============================================================================== createExternalLink - 'external'
	Author : Sakai
	Date   : 2008-01-19
*/

var createExternalLink = function() {
	var externalLink = document.getElementsByTagName('a');
	for (var i = 0, len = externalLink.length; i < len; i++) {
		var a = externalLink[i];
		if (a.getAttribute('rel') == 'external') {
			a.title += ' : Open in a New Window';
			a.onclick = function() {
				window.open(this.getAttribute('href'), '_blank');
				return false;
			}
		}
	}
};

/* ============================================================================== textFormResizer
	Author : Sakai
	Date   : 2008-02-04
*/

var textFormResizer = function() {
	var textForm = document.getElementsByTagName('input');
	for (var i = 0, len = textForm.length; i < len; i++) {
		var inputText = textForm[i];
		if (inputText.getAttribute('type') == 'text') {
			var inputSize = textForm[i].size;
			if ((0 < inputSize) && (inputSize <= 5)) {
				inputText.className = 'level1';
			}
			else if ((5 < inputSize) && (inputSize <= 10)) {
				inputText.className = 'level2';
			}
			else if ((10 < inputSize) && (inputSize <= 40)) {
				inputText.className = 'level3';
			}
			else {
				inputText.className = 'level4';
			}
		}
	}
};

/* ============================================================================== addEvent
*/

function addEvent(elm, listener, fn){
	try{
		elm.addEventListener(listener, fn, false);
	}catch(e){
		elm.attachEvent("on"+listener, fn);
	}
}

addEvent(window, "load", colorRows);
addEvent(window, "load", initRollovers);
addEvent(window, "load", createExternalLink);
addEvent(window, "load", textFormResizer);

}) ();