// Place your application-specific JavaScript functions and classes here
// This file is automatically included by javascript_include_tag :defaults

function isImageUrl(s) {
 	var regexp = /(http):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?\/.*\.(jpg|gif|png)/
 	return regexp.test(s);
}

function replaceImage(id, imageUrl) {
  var newImage = document.createElement('img');
  var oldImage = document.getElementById(id);
  
  newImage.src = imageUrl;
  newImage.id = id;
  
  replaceDiv = oldImage.parentNode;
  replaceDiv.replaceChild(newImage, oldImage);
}