image1 = new Image();
image1.src = "images/but_home2.gif";

image2 = new Image();
image2.src = "images/but_aboutus2.gif";

image3 = new Image();
image3.src = "images/but_ourservices2.gif";

image4 = new Image();
image4.src = "images/but_ourportfolio2.gif";

image5 = new Image();
image5.src = "images/but_troubleshooting2.gif";