$(document).ready(function(){
  	var heights = [];
setTimeout(function(){
   $('div.column240').each(function(i)
	{
	
		heights[i]= $(this).height();
	});

	var h1 = Math.max(heights[0],heights[1]);

	var h2 =Math.max(h1,heights[2]);
	
	var h3 =Math.max(h2,heights[3]);

	 $('div.wp_background').each(function(i)
	{
		$(this).css('height',h3);

	});
},1000);

});