function preloader() 
{
     // counter
     var i = 0;
     // create object
     imageObj = new Image();
     // set image list
     images = new Array();
     images[0]="/menu/work1.jpg"
     images[1]="/menu/work2.jpg"
     images[2]="/menu/work3.jpg"
     images[3]="/menu/about1.jpg"
	 images[4]="/menu/about2.jpg"
     images[5]="/menu/about3.jpg"
     images[6]="/menu/approach1.jpg"
     images[7]="/menu/approach2.jpg"
	 images[8]="/menu/approach3.jpg"
     images[9]="/menu/resources1.jpg"
     images[10]="/menu/resources5.jpg"
     images[11]="/menu/resources3.jpg"
     // start preloading
     for(i=0; i<=3; i++) 
     {
          imageObj.src=images[i];
     }
}