BrowserName=navigator.appName;
 BrowserVersion=parseInt(navigator.appVersion);
 if (BrowserName=="Netscape" && BrowserVersion>=3)
  useable="yes";
 else
  useable="yes";

button10=new Button("foldal/2_1_ki.jpg","foldal/2_1_be.jpg");
button11=new Button("foldal/3_1_ki.jpg","foldal/3_1_be.jpg");
button12=new Button("foldal/4_1_ki.jpg","foldal/4_1_be.jpg");
button13=new Button("foldal/5_1_ki.jpg","foldal/5_1_be.jpg");

button14=new Button("aloldal/2_2_ki.jpg","aloldal/2_2_be.jpg");
button15=new Button("aloldal/2_3_ki.jpg","aloldal/2_3_be.jpg");
button16=new Button("aloldal/2_4_ki.jpg","aloldal/2_4_be.jpg");
button17=new Button("aloldal/2_5_ki.jpg","aloldal/2_5_be.jpg");



 function Button(norm_src,sel_src)
 {
  if (useable=="yes")
  {
   this.norm=new Image();
   this.sel=new Image();
   this.norm.src=norm_src;
   this.sel.src=sel_src;
  }
 }

 function TurnToSel(ImageName)
 {
  if (useable=="yes")
  {
   NewSrc=eval(ImageName+".sel.src");
   document[ImageName].src=NewSrc;
  }
 }

 function TurnToNorm(ImageName)
 {
  if (useable=="yes")
  {
   NewSrc=eval(ImageName+".norm.src");
   document[ImageName].src=NewSrc;
  }
 }