/** Arrays of rollover images for roll-over links */
var mouseOverImages = new Array();
var mouseOutImages = new Array();

/** Display the rollover image when the mouse hovers over it.*/
function onMouseOver(imageName)
{
	if ((document.images != null) && (document.images != undefined))
	{
		if ((document.images[imageName] != null) && (document.images[imageName] != undefined))
		{
			if ((mouseOverImages != null) && (mouseOverImages != undefined))
			{
				if ((mouseOverImages[imageName] != null) && (mouseOverImages[imageName] != undefined))
				{
					document.images[imageName].src = mouseOverImages[imageName].src;
				}
			}
		}
	}
}

/** Display the original image when the mouse leaves it. */
function onMouseOut(imageName)
{
	if ((document.images != null) && (document.images != undefined))
	{
		if ((document.images[imageName] != null) && (document.images[imageName] != undefined))
		{
			if ((mouseOutImages != null) && (mouseOutImages != undefined))
			{
				if ((mouseOutImages[imageName] != null) && (mouseOutImages[imageName] != undefined))
				{
			    	document.images[imageName].src = mouseOutImages[imageName].src;
				}
			}
		}
  	}
}

/** Initialize the rollover images for the web app */
function InitializeRollovers()
{
	// Initialize the mouse over image array
	mouseOverImages['drrassael'] = new Image();
	mouseOverImages['transplantation'] = new Image();
	mouseOverImages['photos'] = new Image();
	mouseOverImages['stages'] = new Image();
	mouseOverImages['why'] = new Image();
	mouseOverImages['locations'] = new Image();
	mouseOverImages['contact'] = new Image();
	
	// Initialize the mouse out image array
	mouseOutImages['drrassael'] = new Image();
	mouseOutImages['transplantation'] = new Image();
	mouseOutImages['photos'] = new Image();
	mouseOutImages['stages'] = new Image();
	mouseOutImages['why'] = new Image();
	mouseOutImages['locations'] = new Image();
	mouseOutImages['contact'] = new Image();
	
	// Set the mouse over image urls
	mouseOverImages['drrassael'].src = "images/rollovers/drrassael_over.jpg";
	mouseOverImages['transplantation'].src = "images/rollovers/transplantation_over.jpg";
	mouseOverImages['photos'].src = "images/rollovers/photos_over.jpg";
	mouseOverImages['stages'].src = "images/rollovers/stages_over.jpg";
	mouseOverImages['why'].src = "images/rollovers/why_over.jpg";
	mouseOverImages['locations'].src = "images/rollovers/locations_over.jpg";
	mouseOverImages['contact'].src = "images/rollovers/contact_over.jpg";
	
	// Set the mouse out image urls
	mouseOutImages['drrassael'].src = "images/rollovers/drrassael.jpg";
	mouseOutImages['transplantation'].src = "images/rollovers/transplantation.jpg";
	mouseOutImages['photos'].src = "images/rollovers/photos.jpg";
	mouseOutImages['stages'].src = "images/rollovers/stages.jpg";
	mouseOutImages['why'].src = "images/rollovers/why.jpg";
	mouseOutImages['locations'].src = "images/rollovers/locations.jpg";
	mouseOutImages['contact'].src = "images/rollovers/contact.jpg";
}