$(document).ready(function(){
	$('.overlay').each(function (i) {
	  $(this).wrap("<div></div>");
	  var src = this.src;
	  var w = this.width;
	  var h = this.height;
	  var wrapper = $(this).parent();
	  $(this).parent().css("background-image", "url(" + src + ")").css("width", w + "px").css("height", h + "px");
	  this.src = "http://redesign.touchpoint.dev.tx.co.nz/images/casestudies/overlay.png";
	  this.width = w;
	  this.height = h;
	});
});