var imgI = 0;

function preloadImages()
{
	while(imgI < imgholder.length)
	{
		imgholder[imgpreloads[imgI]] = new Array(2);
		imgholder[imgpreloads[imgI]]['ON'] = new Image();
		imgholder[imgpreloads[imgI]]['ON'].src = "layout/rollovers/"+ imgpreloads[imgI] +"ON.gif";
		imgholder[imgpreloads[imgI]]['OFF'] = new Image();
		imgholder[imgpreloads[imgI]]['OFF'].src = "layout/rollovers/"+ imgpreloads[imgI] +"OFF.gif";
	
		imgI++;
	}
}

function swapImage(img,ext)
{
	if(ext == 1)
	{
		img.src = imgholder[img.name]['ON'].src;
	}
	else
	{
		img.src = imgholder[img.name]['OFF'].src;
	}
}

function showMenu(name,ext)
{
	if(ext == 1)
	{
		document.getElementById(name).src = imgholder[name]['ON'].src;
		document.getElementById(name+"menu").style.display = '';
	}
	else
	{
		document.getElementById(name).src = imgholder[name]['OFF'].src;
		document.getElementById(name+"menu").style.display = 'none';
	}
}

function hideshow(name,ext)
{
	if(ext == 2)
	{
		document.getElementById(name).style.display = 'none';
	}
	else
	{
		document.getElementById(name).style.display = '';
	}
}

function redirect(url)
{
	window.location = url;
}

var imgpreloads = new Array("home","rad","privacy","patient","locations","about");
var imgholder = new Array(imgpreloads.length);

preloadImages();