function preLoadImage(url)
{
  var t = new Image()
  t.src = url;
}


function init(event)
{
	preLoadImage("images/_go_button.jpg");
	
	if( $('LeftNavContainer') && $('MainContentContainer') )
	{
		var h = Math.max($('LeftNavContainer').getHeight(),$('MainContentContainer').getHeight());
		h += 50;
		var style = { height:h + 'px' };
		$('LeftNavContainer').setStyle(style); 
		$('MainContentContainer').setStyle(style);
	}
}

Event.observe(window, 'load', init);