function openPrintversion(filename)
{
 var whichoptions = "width=650,height=500,scrollbars=yes,menubar=yes,resizable=yes";
 window.open(filename,'printversion',whichoptions);
}

function openImage(imgfilename)
{
 var whichoptions = "width=650,height=580,scrollbars=yes,menubar=yes";
 window.open(imgfilename,'imgopen',whichoptions);
}

function openImprint()
{
 top.left.location.href = "left_kontakt.htm";
  top.center.up.location.href = "center_up_kontakt.htm";
  top.center.main.location.href = "center_main_kontakt.htm#impressum";
  top.center.down.location.href = "center_down_kontakt.htm"; 
}

function openXXL(filename)
{
 var currentHeight = screen.availHeight-50;
 var currentWidth = screen.availWidth-50; 
 var whichoptions = "width=" +currentWidth + ",height=" +currentHeight + ",scrollbars=yes,resizable=yes";
 window.open(filename,'xxlfastentuch',whichoptions);
}

function changeFrame(file1, framefile, file2, file3, file4)
{
 top.left.location.href = file1;
 if(file2=="")
  top.center.location.href = framefile;
 else
 {
  top.center.up.location.href = file2;
  top.center.main.location.href = file3;
  top.center.down.location.href = file4;    
 }
}

function chngImg(imgname, mousestat)
{
 if (document.images)
 {
  if(mousestat==1)
   document.images[imgname].src = "images/nav/" + imgname + "1.gif";
  else
   document.images[imgname].src = "images/nav/" + imgname + "0.gif";
 }
}