function bland(param) 
{ window.open('vpSearch/VPErg.aspx?t=c&s=' + param, param, 'scrollbars=yes,width=600,height=420');
}

function submit_Form()
{ var formVariable = document.form.sucheingabe.value;
  ziel='vpSearch/VPErg.aspx?t=s&s=' + formVariable;
  window.open(ziel,'Suche','scrollbars=yes,width=600,height=420');
}