function clearCalc()
  {
  if(!document.forms['aForm'].elements['10_Preisrechnerangaben'].checked)
    {
    //alert('del');
    for(var i = 0; i < 6; i++)
      document.forms['aForm'].elements[i].value='';
    }
  return true;
  }


function doCalc()
  {
  lay=parseInt(document.getElementById('g_lay').innerHTML);

  kat=0;
  i=parseInt(document.forms['aForm'].elements[1].value);
  if(i>2)kat=i*100;
  if(i>5)kat=500;
  wE('g_kat',kat);


  i=parseInt(document.forms['aForm'].elements[2].value);
  e=(1-Math.round(i/5+0.49))*5+45;
  if(e<25)e=25;if(e>45)e=45;
  pag=e*i;

  wE('e_pag',e);
  wE('g_pag',pag);

  frm=parseInt(document.forms['aForm'].elements[3].value)*35;
  wE('g_frm',frm);

  pic=parseInt(document.forms['aForm'].elements[4].value)*10;
  wE('g_pic',pic);

  scr=parseInt(document.forms['aForm'].elements[5].value)*250;
  wE('g_scr',scr);

  g=lay+kat+pag+frm+pic+scr;
  wE('g_ges',g);

  return true;
  }

function wE(k,v)
  {document.getElementById(k).innerHTML=v + ',00' ;}