browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);
if (browserName == "Netscape" && browserVer >= 3) {
 version = "safe";
}
else {
 version = "unsafe";
}
if (browserName == "Microsoft Internet Explorer" && browserVer >=3) {
 version = "iesafe";
}
s1on=new Image();s1on.src="images/on1.gif";
s2on=new Image();s2on.src="images/on2.gif";
s3on=new Image();s3on.src="images/on3.gif";
s4on=new Image();s4on.src="images/on4.gif";
s5on=new Image();s5on.src="images/on5.gif";
s6on=new Image();s6on.src="images/on6.gif";
s7on=new Image();s7on.src="images/on7.gif";
s8on=new Image();s8on.src="images/on8.gif";
s1off=new Image();s1off.src="images/off1.gif";
s2off=new Image();s2off.src="images/off2.gif";
s3off=new Image();s3off.src="images/off3.gif";
s4off=new Image();s4off.src="images/off4.gif";
s5off=new Image();s5off.src="images/off5.gif";
s6off=new Image();s6off.src="images/off6.gif";
s7off=new Image();s7off.src="images/off7.gif";
s8off=new Image();s8off.src="images/off8.gif";

function preload(length,path,type) {
 for (var i=1;i<=length;i++) {
  this[i]=new Image();
  this[i].src=path+i+type;
  }
 return this
}

function preload1(n,s1,s2,s3) {
 s1=new preload(n,'images/'+s1,'.jpg');
 s2=new preload(n,'images/'+s2,'.jpg');
 window.status=s3;
}

function chng_img_on(imgName) {
 if (version == "iesafe") {
  iechng_img_on(imgName)
 }
 if (version == "safe") {
  document [imgName].src = eval(imgName + "on.src");
 }
}

function iechng_img_on(imgName) {
 document.images[imgName].src = eval(imgName + "on.src");
}

function chng_img_off(imgName) {
 if (version == "iesafe") {
  iechng_img_off(imgName)
 }
 if (version == "safe") {
  document [imgName].src = eval(imgName + "off.src");
 }
}

function iechng_img_off(imgName) {
  document.images[imgName].src = eval(imgName + "off.src");
}