function initPage()
{
  document.onmouseover = document_onmouseover;
  document.onmouseout = document_onmouseout;
  document.onmousedown = document_onmousedown;
}

function document_onmouseover(eventObject)
{
  var eventSourceElement = getEventSourceElement(eventObject);
  if (eventSourceElement != null && eventSourceElement.tagName.toLowerCase() == "img")
  {  
    eventSourceElement.style.borderColor = "#7DA8FF";
  }
}

function document_onmousedown(eventObject)
{
  var eventSourceElement = getEventSourceElement(eventObject);
  if (eventSourceElement != null && eventSourceElement.tagName.toLowerCase() == "img" && (event.button=="2" || event.which=="3"))
  {
    alert("Copy protected");
    
  }
}

function getEventSourceElement(eventObject)
{
   var eventSourceElement;
   if (eventObject == null)
   {
      eventSourceElement = window.event.srcElement;
   }
   else
   {
      eventSourceElement = eventObject.target;
   }
   return eventSourceElement;
}

function document_onmouseout(eventObject)
{
   var eventSourceElement = getEventSourceElement(eventObject);
   if (eventSourceElement != null && eventSourceElement.tagName.toLowerCase() == "img")
   {
      eventSourceElement.style.borderColor = "#343434";
   }
}