[Javascript] No right click on images

[Laurent Muchacho]

Hi Alan,

You could try something like this 

for(var i=0; i<document.getElementsByTagName('IMG').length;i++){
    document.getElementsByTagName('IMG').oncontextmenu = function (){return false}
}

Laurent
  ----- Original Message ----- 
  From: Alan Easton 
  To: javascript at LaTech.edu 
  Sent: Wednesday, September 14, 2005 11:38 AM
  Subject: Re: [Javascript] No right click on images


  Thanks Matt,

  This does work, oncontextmenu="return false;"

  however, the images involved are from a content management system, and the client already has hundreds all over the site.

  I was hoping there could be a universal function I could paste into the HEAD of the page, and it would effect all images, instead of having to re-work all the existing images.

  I have been playing with this function, which works, but it has the alert box popping up, and if I comment it out, the function does not work.

  Any ideas........

  //------------------code-----------------------

  <script type="text/javascript">

  var clickmessage="Images Copyright NC3Rs 2005"

  function disableclick(e) {
  if (document.all) {
  if (event.button==2||event.button==3) {
  if (event.srcElement.tagName=="IMG"){
  alert(clickmessage);
  return false;
  }
  }
  }
  else if (document.layers) {
  if (e.which == 3) {
  alert(clickmessage);
  return false;
  }
  }
  else if (document.getElementById){
  if (e.which==3&&e.target.tagName=="IMG"){
  alert(clickmessage);
  return false;
  }
  }
  }

  function associateimages(){
  for(i=0;i<document.images.length;i++)
  document.images[i].onmousedown=disableclick;
  }

  if (document.all)
  document.onmousedown=disableclick
  else if (document.getElementById)
  document.onmouseup=disableclick
  else if (document.layers)
  associateimages()


   </script>

  //-----------------code-----------------------

  Again, all help appreciated..........

  Alan...


----------------------------------------------------------------------------

    From:  Matt Barton <javascript at mattbarton.org>
    Reply-To:  "\[JavaScript List\]" <javascript at LaTech.edu>
    To:  "[JavaScript List]" <javascript at LaTech.edu>
    Subject:  Re: [Javascript] No right click on images
    Date:  Wed, 14 Sep 2005 11:21:49 +0100
    >Hi Alan,
    >
    >Pretend that at this point I'm telling you all the things that loads 
    >of other people are likely to say about it being a bad idea, bad 
    >practice, pointless if the client doesn't have javascript enabled 
    >etc, etc, and so on ad. nauseum.
    >
    >What you want is something like:
    >
    > <img oncontextmenu="return false;" src= ....
    >
    >  ... or ...
    >
    > <img oncontextmenu="returnValue = false;" src= ....
    >
    >Try those, and have an experiment, I'm sure it's something like 
    >that.
    >
    >Matt
    >
    >Alan Easton wrote:
    >>Hello All,
    >>  I realise this type of function is quite pointless, but a client 
    >>would like it.
    >>  I need to disable right click on images, but I DO NOT want any 
    >>alert box popping up, I merely do not want the right click menu to 
    >>appear.
    >>  I also need the right click to work on any other part of the 
    >>screen, so they can still right click and refresh, view source, 
    >>etc....
    >>  Hope I have made myself clear, let me know if you need anything 
    >>else from me.
    >>  As usual, any help would be really appreciated.
    >>  Alan...
    >>
    >>--
    >>This email has been verified as Virus free
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