JAVASCRIPT

function tooltip() {
    var title = $(this).attr("title");
    $(this).removeAttr("title");

    this.TooltipMessage = $("<div/>", {class: "tooltipMessage", style: "display: none;"});
    this.TooltipMessage.html("<span>" + title + "</span>");
    $("body").append(this.TooltipMessage);


    if ($(this).hasClass("tooltipLeft")) {
        this.TooltipMessage.addClass("left");
    }

    $(this).hover(tooltipFadeIn, tooltipFadeOut);
    $(this).mousemove(tooltipMousemove);
}

function tooltipFadeIn() {
    this.TooltipMessage.stop(true, false).fadeIn();
}

function tooltipFadeOut() {
    this.TooltipMessage.stop(true, false).fadeOut();
}

function tooltipMousemove(e) {
    var offset = {
        left: e.pageX,
        top: e.pageY + 5
    };

    if (this.TooltipMessage.hasClass("left")) {
        offset.left -= this.TooltipMessage.width() + 10;
    } else {
        offset.left -= 100;

    }
    this.TooltipMessage.offset(offset);
}

$(function (e) {
    $(".tooltip").each(tooltip);
});

 window.onload = function() {
    document.addEventListener("contextmenu", function(e){
      e.preventDefault();
    }, false);
    document.addEventListener("keydown", function(e) {
    //document.onkeydown = function(e) {
      // "I" key
      if (e.ctrlKey && e.shiftKey && e.keyCode == 73) {
        disabledEvent(e);
      }
      // "J" key
      if (e.ctrlKey && e.shiftKey && e.keyCode == 74) {
        disabledEvent(e);
      }
      // "S" key + macOS
      if (e.keyCode == 83 && (navigator.platform.match("Mac") ? e.metaKey : e.ctrlKey)) {
        disabledEvent(e);
      }
      // "U" key
      if (e.ctrlKey && e.keyCode == 85) {
        disabledEvent(e);
      }
      // "F12" key
      if (event.keyCode == 123) {
        disabledEvent(e);
      }
    }, false);
    function disabledEvent(e){
      if (e.stopPropagation){
        e.stopPropagation();
      } else if (window.event){
        window.event.cancelBubble = true;
      }
      e.preventDefault();
      return false;
    }};

$("img").mousedown(function(){
    return false;
});