function pos(n,oben,links) 
{
    document.getElementById(n).style.top = oben+'px'; 
    document.getElementById(n).style.left = links+'px'; 
}; 
function PickBgImage() 
{ 
    var b1=1024;
    var b2=1280;
    var b3=1440;
    var h1= 768;
    var h2= 960;
    var h3=1024;

    var ImB1H1="./images/background/wolken_1024x768.jpg"; //  D
    var ImB1H2="./images/background/wolken_1280x960.jpg"; // (C)
    var ImB1H3="./images/background/wolken_1280x1024.jpg";// (B) 
    
    var ImB2H1="./images/background/wolken_1280x960.jpg"; // (C)
    var ImB2H2="./images/background/wolken_1280x960.jpg"; //  C
    var ImB2H3="./images/background/wolken_1280x1024.jpg";//  B
    
    var ImB3H1="./images/background/wolken_1440x1024.jpg";// (A)
    var ImB3H2="./images/background/wolken_1440x1024.jpg";// (A)
    var ImB3H3="./images/background/wolken_1440x1024.jpg";//  A

    var _height=screen.height;
    var _width=screen.width; 

    if (_width<=b1)
    {
      if      (_height<=h1) document.body.background=ImB1H1;
      else if (_height<=h2) document.body.background=ImB1H2;
      else                  document.body.background=ImB1H3;
    }
    else if (_width<=b2) 
    {
      if      (_height<=h1) document.body.background=ImB2H1;
      else if (_height<=h2) document.body.background=ImB2H2;
      else                  document.body.background=ImB2H3;
    }
    else
    {
      if      (_height<=h1) document.body.background=ImB3H1;
      else if (_height<=h2) document.body.background=ImB3H2;
      else                  document.body.background=ImB3H3;
    }
}; 

function getBgImage() 
{ 
    var b1=1024;
    var b2=1280;
    var b3=1440;
    var h1= 768;
    var h2= 960;
    var h3=1024;

    var ImB1H1='./images/background/wolken_1024x768.jpg'; //  D
    var ImB1H2="./images/background/wolken_1280x960.jpg"; // (C)
    var ImB1H3="./images/background/wolken_1280x1024.jpg";// (B) 
    
    var ImB2H1="./images/background/wolken_1280x960.jpg"; // (C)
    var ImB2H2="./images/background/wolken_1280x960.jpg"; //  C
    var ImB2H3="./images/background/wolken_1280x1024.jpg";//  B
    
    var ImB3H1="./images/background/wolken_1440x1024.jpg";// (A)
    var ImB3H2="./images/background/wolken_1440x1024.jpg";// (A)
    var ImB3H3="./images/background/wolken_1440x1024.jpg";//  A

    var _height=screen.height;
    var _width=screen.width; 
    
    if (_width<=b1)
    {
      if      (_height<=h1) theImg=ImB1H1;
      else if (_height<=h2) theImg=ImB1H2;
      else                  theImg=ImB1H3;
    }
    else if (_width<=b2) 
    {
      if      (_height<=h1) theImg=ImB2H1;
      else if (_height<=h2) theImg=ImB2H2;
      else                  theImg=ImB2H3;
    }
    else
    {
      if      (_height<=h1) theImg=ImB3H1;
      else if (_height<=h2) theImg=ImB3H2;
      else                  theImg=ImB3H3;
    }
    
    var divImg= document.getElementById("bgimg");
    var style= divImg.getAttribute("style");
    if (document.all)
    {
        style.backgroundImage= "url("+theImg+ ")";
        style.margin="-15px -10px";
    }
    else
    {
        style += "background-image: url("+theImg+ ")";
        divImg.setAttribute("style",style);
    }
};