function img_a()
{
  var i,x,a=document.sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function imgsPreload()
{
  var d=document; if(d.images){ if(!d.p) d.p=new Array();
    var i,j=d.p.length,a=imgsPreload.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.p[j]=new Image; d.p[j++].src=a[i];}}
}

function findImg(n, d)
{
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=findImg(n,d.layers[i].document); return x;
}

function img_b()
{
  var i,j=0,x,a=img_b.arguments; document.sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=findImg(a[i]))!=null){document.sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function lupe_laden(nr)
{
img1 = new Image()
img1.src = "bilder/graph" + nr + "_d.jpg"
img2 = new Image()
img2.src = "bilder/graph" + nr + ".jpg"
}

function lupe_laden(nr)
{
img1 = new Image()
img1.src = "bilder/plastik" + nr + "_d.jpg"
img2 = new Image()
img2.src = "bilder/plastik" + nr + ".jpg"
}


function lupe_an()
{
  document.showimg.src = img1.src
}

function lupe_aus()
{
  document.showimg.src = img2.src
}

//  neues Fenster öffnen -->
function oeffne(loc, nm, gros)
{
var     goodies_window  = null

        if(goodies_window)
        {
                if(goodies_window.closed)
                        goodies_window  = null
                else
                        goodies_window.focus()
        }
        goodies_window  = open(loc, nm, gros )
}
// Ende neues Fenster öffnen -->