function clearField()
{
  var value = document.getElementById('sb1').value;
  if(value == "Suchbegriff")
  {
    document.getElementById('sb1').value = "";
    document.getElementById('sb1').style.color = "#000000";
  }
}

function checkField()
{
  var value = document.getElementById('sb1').value;
  if(value == "")
  {
    document.getElementById('sb1').value = "Suchbegriff";
    document.getElementById('sb1').style.color = "#cdcdcd";
  }
}

function homebtn()
{
  $("#btn_home").effect("pulsate",{ times: 3 },500 );
  var tst = setTimeout("homebtn()", 7000);
}