Preventing downloading images by blocking right click on DOM elements and CSS in modern browsers (made for http://erikaabenia.com/)

Preventing draggable images or selection on every image

img {
/* Preventing draggable images or selection on every image. Use at your own risk. */
  -webkit-user-select:none;
  -webkit-touch-callout:none; /*Safari, safari mobile; iPhone OS*/
  -khtml-user-select: none;
  -ms-user-select: none;
  -o-user-select: none;
  user-select: none;
}

Select specific DOM elements an add attributes

window.onload = function() {
    var dontTouchy = document.getElementsByTagName("img");
    for (var i = 0; i < dontTouchy.length; i++) {
        dontTouchy[1].setAttribute("oncontextmenu", "return false;");
        dontTouchy[1].setAttribute("ondragstart","return false;");
        dontTouchy[1].setAttribute("onselectstart","return false;");
    }
    var thumbDontTouchy = document.getElementsByClassName("image-anchor");
    for (var i = thumbDontTouchy.length - 1; i >= 0; i--) {
    	var protectedImg = thumbDontTouchy[i].firstChild;
    	protectedImg.setAttribute("oncontextmenu", "return false;");
    	protectedImg.setAttribute("ondragstart","return false;");
    	protectedImg.setAttribute("onselectstart","return false;");
    };
}

You javascript can be optimized since your using jquery.

(function($){
    var block = function(e) {e.preventDefault(); return false; };
    $(document).on({
        contextmenu: block,
        dragstart: block,
        selectstart: block
    }, "img, .image-anchor");
})(jQuery);

Then again why you would want to disable the context menu for images is just a total unknown to me since if someone wants the images they will just it F12 and get them or use a scraper (browser plugin).