// JavaScript Document
jQuery.preloadImages = function()
{
  for(var i = 0; i<arguments.length; i++)
  {
    jQuery("<img>").attr("src", arguments[i]);
  }
}
//preload images
$.preloadImages("images/home/research_o.jpg", "images/home/water_o.jpg", "images/home/project_o.jpg" ,
"images/home/services_o.jpg");