function bg_h(objekt) {
   objekt.style.backgroundColor="#fff";
}   

function bg_o(objekt) {
   objekt.style.backgroundColor="#000000";
}   

function i_c(objekt) {
        
  var Over_Out="o";
        
  if(objekt.src.indexOf("-hover")==-1)
  {
      Over_Out="h";
  }

  if(Over_Out=="h")
  {
      objekt.src=str_replace(".gif", "-hover.gif", objekt.src);
  }
  else
  {
      objekt.src=str_replace("-hover.gif", ".gif", objekt.src);
  }
}   
   
   
function str_replace(search, replace, subject) {
    return subject.split(search).join(replace);
}      


var aktiv = window.setInterval("blinken()", 600);
var farbe = 1;
function blinken () {
  if (farbe == 1) {
    document.getElementById("pumpe").style.color="#FF1DB6";
    farbe = 2;
  } else {
    document.getElementById("pumpe").style.color="#000000";
    farbe = 1;
  }
}