if (document.images) 
{
   img1 = new Image();
   img2 = new Image();
   img3 = new Image();
   img4 = new Image();
   img5 = new Image();
   img6 = new Image();
   img7 = new Image();
   img8 = new Image();
   img9 = new Image();
   img10 = new Image();
   img11 = new Image();
   img12 = new Image();
   img13 = new Image();
   img14 = new Image();
   img1.src = "_images/oilgaspetro1.jpg";
   img2.src = "_images/industry1.jpg"
   img3.src = "_images/aviation1.jpg"
   img4.src = "_images/construction1.jpg"
   img5.src = "_images/emergency1.jpg"
   img6.src = "_images/fire1.jpg"
   img7.src = "_images/marine1.jpg"
   img8.src = "_images/law1.jpg"
   img9.src = "_images/rescue1.jpg"
   img10.src = "_images/wmd1.jpg"
   img11.src = "_images/ppe1.jpg"
   img12.src = "_images/childsafety1.jpg"
   img13.src = "_images/industry1.jpg"
   img14.src = "_images/industry1.jpg"
}