function getMenuImage (obj) {
	var img=obj.children().obj(0);
	if (img.tagName == 'A') 
		return $(img).children();
	return $(img);
}

$().ready(function() {
	$().preloadHoverImages(['clicktoregister','learnmore','clinical','laboratory'], 'png');

	$('#clickregisterButton').click(function() {		
		window.location="/register";
	});
	$('#clicktoregister').click(function() {		
		window.open("http://www.valplast.com/register/",'_new');
	});
	$('.clinic').click(function() {
		window.location="/Clinical";
	});
	$('.lab').click(function() {
		window.location="/Laboratory";
	});
	$('.learnmore').click(function() {
		window.location="/Patient";
	});

	$(['.button']).hover(function(e) {
		var img=getMenuImage($('#' + this.id));		
		if (img.hasClass('selected'))			
			return;		
		img=img.obj();				
		var type=(img.src.indexOf('Over') != -1) ? 'normal' : 'hover';
		var file=$().getPreloadedImage(this.id, type);
		if (file == false) 
			return;		
		img.src=file;
	}, 'toggle');
});