/****************************************************************************************************
// IMAGE SWAP FUNCTIONS
//
// usage: <a href="../donations.htm"
//				onmouseover="changeImages('donate_btn', 'images/donate_btn-over.gif'); return true;"
//				onmouseout="changeImages('donate_btn', 'images/donate_btn.gif'); return true;"
//				onmousedown="changeImages('donate_btn', 'images/donate_btn-down.gif'); return true;"
//				onmouseup="changeImages('donate_btn', 'images/donate_btn-over.gif'); return true;">
//			<img name="donate_btn" .../></a>
******************************************************************************************************/


function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImagesArray(array) {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<array.length; i+=2) {
			document[array[i]].src = array[i+1];
		}
	}
}

function changeImages() {
	changeImagesArray(changeImages.arguments);
}

function toggleImages() {
	for (var i=0; i<toggleImages.arguments.length; i+=2) {
		if (selected == toggleImages.arguments[i])      changeImagesArray(toggleImages.arguments[i+1]);
	}
}

var selected = '';
var preloadFlag = false;

function preloadImages() {
	if (document.images) {
		era_over = newImage("images/eralogo_over.gif");
		hud_over = newImage("images/Equal-Housing_over.gif");
		preloadFlag = true;
	}
	//alert('preloading');
}

/****************************************************************************************/


/**************************************************
/	TAB FUNCTIONS FOR CHANGING BACKGROUND COLOR
/*************************************************/

function tabOver(cell)
{
	cell.style.backgroundColor = '#FFF7DD';
}

function tabOut(cell)
{
	cell.style.backgroundColor = '#F3F3F3';
}

/*******************************************
/	BUBBLE CAPTION CONTENT SWITCHER
/******************************************/

var current_bubble = 1;

function switchBubble(time)
{
	if(document.getElementById('bubble_'+(current_bubble+1)) != null)
	{
		document.getElementById('bubble_'+current_bubble).style.display = 'none';
		current_bubble++;
		document.getElementById('bubble_'+current_bubble).style.display = 'block';
	}
	else
	{
		document.getElementById('bubble_'+current_bubble).style.display = 'none';
		current_bubble = 1;
		document.getElementById('bubble_'+current_bubble).style.display = 'block';
	}
	setTimeout("switchBubble("+time+")",time);
}