if(navigator.appVersion.charAt(0) >= 3) {
var img = new Array();

img[1] = new Image();  img[1].src="common/images/topics2_2.jpg"; 
img[2] = new Image();  img[2].src="common/images/topics2_3.jpg"; 
img[3] = new Image();  img[3].src="common/images/top1_2.jpg"; 
img[4] = new Image();  img[4].src="common/images/top1_3.jpg"; 
img[5] = new Image();  img[5].src="common/images/top9_2.jpg"; 
img[6] = new Image();  img[6].src="common/images/top9_3.jpg"; 
img[7] = new Image();  img[7].src="common/images/top13_2.jpg"; 
img[8] = new Image();  img[8].src="common/images/top13_3.jpg"; 
img[9] = new Image();  img[9].src="../company/images/company3_1.jpg"; 
img[10] = new Image();  img[10].src="../company/images/company3_2.jpg"; 

}
function change_image(nam,num) {
  if(navigator.appVersion.charAt(0) >= 3) {
    document.images[nam].src = img[num].src;
  }
}