if (parseInt(navigator.appVersion) >= 3) {

 schall1_off = new Image;
 schall1_off.src = "images/schall_off.gif";
 schall1_on = new Image;
 schall1_on.src = "images/schall_on.gif";

 schall2_off = new Image;
 schall2_off.src = "images/schall_off.gif";
 schall2_on = new Image;
 schall2_on.src = "images/schall_on.gif";
 
 schall3_off = new Image;
 schall3_off.src = "images/schall_off.gif";
 schall3_on = new Image;
 schall3_on.src = "images/schall_on.gif";

 schall4_off = new Image;
 schall4_off.src = "images/schall_off.gif";
 schall4_on = new Image;
 schall4_on.src = "images/schall_on.gif";

 schall5_off = new Image;
 schall5_off.src = "images/schall_off.gif";
 schall5_on = new Image;
 schall5_on.src = "images/schall_on.gif";

 schall6_off = new Image;
 schall6_off.src = "images/schall_off.gif";
 schall6_on = new Image;
 schall6_on.src = "images/schall_on.gif";

 schall7_off = new Image;
 schall7_off.src = "images/schall_off.gif";
 schall7_on = new Image;
 schall7_on.src = "images/schall_on.gif";

 schall8_off = new Image;
 schall8_off.src = "images/schall_off.gif";
 schall8_on = new Image;
 schall8_on.src = "images/schall_on.gif";

 schall9_off = new Image;
 schall9_off.src = "images/schall_off.gif";
 schall9_on = new Image;
 schall9_on.src = "images/schall_on.gif";

 schall10_off = new Image;
 schall10_off.src = "images/schall_off.gif";
 schall10_on = new Image;
 schall10_on.src = "images/schall_on.gif";
 
 schall11_off = new Image;
 schall11_off.src = "images/schall_off.gif";
 schall11_on = new Image;
 schall11_on.src = "images/schall_on.gif";

 schall12_off = new Image;
 schall12_off.src = "images/schall_off.gif";
 schall12_on = new Image;
 schall12_on.src = "images/schall_on.gif";
 
 schall13_off = new Image;
 schall13_off.src = "images/schall_off.gif";
 schall13_on = new Image;
 schall13_on.src = "images/schall_on.gif";

 schall14_off = new Image;
 schall14_off.src = "images/schall_off.gif";
 schall14_on = new Image;
 schall14_on.src = "images/schall_on.gif";

 schall15_off = new Image;
 schall15_off.src = "images/schall_off.gif";
 schall15_on = new Image;
 schall15_on.src = "images/schall_on.gif";

 schall16_off = new Image;
 schall16_off.src = "images/schall_off.gif";
 schall16_on = new Image;
 schall16_on.src = "images/schall_on.gif";

 schall17_off = new Image;
 schall17_off.src = "images/schall_off.gif";
 schall17_on = new Image;
 schall17_on.src = "images/schall_on.gif";

 schall18_off = new Image;
 schall18_off.src = "images/schall_off.gif";
 schall18_on = new Image;
 schall18_on.src = "images/schall_on.gif";

 schall19_off = new Image;
 schall19_off.src = "images/schall_off.gif";
 schall19_on = new Image;
 schall19_on.src = "images/schall_on.gif";

 schall20_off = new Image;
 schall20_off.src = "images/schall_off.gif";
 schall20_on = new Image;
 schall20_on.src = "images/schall_on.gif";

 schall21_off = new Image;
 schall21_off.src = "images/schall_off.gif";
 schall21_on = new Image;
 schall21_on.src = "images/schall_on.gif";

 schall22_off = new Image;
 schall22_off.src = "images/schall_off.gif";
 schall22_on = new Image;
 schall22_on.src = "images/schall_on.gif";

 schall23_off = new Image;
 schall23_off.src = "images/schall_off.gif";
 schall23_on = new Image;
 schall23_on.src = "images/schall_on.gif";

 schall24_off = new Image;
 schall24_off.src = "images/schall_off.gif";
 schall24_on = new Image;
 schall24_on.src = "images/schall_on.gif";

 schall25_off = new Image;
 schall25_off.src = "images/schall_off.gif";
 schall25_on = new Image;
 schall25_on.src = "images/schall_on.gif";


 schall101_off = new Image;
 schall101_off.src = "images/schall_off.gif";
 schall101_on = new Image;
 schall101_on.src = "images/schall_on.gif";

 schall102_off = new Image;
 schall102_off.src = "images/schall_off.gif";
 schall102_on = new Image;
 schall102_on.src = "images/schall_on.gif";
 
 schall103_off = new Image;
 schall103_off.src = "images/schall_off.gif";
 schall103_on = new Image;
 schall103_on.src = "images/schall_on.gif";

 schall104_off = new Image;
 schall104_off.src = "images/schall_off.gif";
 schall104_on = new Image;
 schall104_on.src = "images/schall_on.gif";

 schall105_off = new Image;
 schall105_off.src = "images/schall_off.gif";
 schall105_on = new Image;
 schall105_on.src = "images/schall_on.gif";

 schall106_off = new Image;
 schall106_off.src = "images/schall_off.gif";
 schall106_on = new Image;
 schall106_on.src = "images/schall_on.gif";

}

 function img_act(img_name) {
      if (parseInt(navigator.appVersion) >= 3) {
           img_on = eval(img_name + "_on.src");
           document [img_name].src = img_on;
      }
 }


 function img_inact(img_name) {
      if (parseInt(navigator.appVersion) >= 3) {
           img_off = eval(img_name + "_off.src");
           document [img_name].src = img_off;
      }
 }