//include this file in the page to be displayed everytime the thickbox is used to display that page in an iframe
//it will make sure to close the thickbox window when ESC key is pressed.
document.onkeydown = function(e){ 	
				if (e == null) { // ie
					keycode = event.keyCode;
				} else { // mozilla
					keycode = e.which;
				}
				if(keycode == 27){ // close
					window.parent.tb_remove();
				} 
			};