Disable new tab opening of links using JQuery

Below JS function will use for disabling the new tab functionality and it will throw the alert message.
  1. function disableNewTabClick() {  
  2.     var listCtrl = document.getElementsByTagName('a');  
  3.     for (var i = 0; i < listCtrl.length; i++) {  
  4.         listCtrl[i].onmousedown = function(event) {  
  5.             if (!event) event = window.event;  
  6.             if (event.ctrlKey) {  
  7.                 alert("Functionality for Opening links in a new tab/window is disabled !");  
  8.                 return false;  
  9.             }  
  10.             if (event.shiftKey) {  
  11.                 alert("Functionality for Opening links in a new tab/window is disabled !");  
  12.                 return false;  
  13.             }  
  14.             if (event.shiftKey && event.ctrlKey) {  
  15.                 alert("Functionality for Opening links in a new tab/window is disabled !");  
  16.                 return false;  
  17.             }  
  18.         }  
  19.     }