function openw(co, nazev, param) {
   aPopUp = window.open(co, nazev, param);
}

            movefilter=false;
            function move_filter() {
              movefilter=true;
              
            }
            function stop_filter() {
              movefilter=false;
              
            }
      
            function posunuj_filter(evt) {
            if (movefilter) {
               mouseX=evt.pageX?evt.pageX:evt.clientX;
               mouseY=evt.pageY?evt.pageY:evt.clientY;
               document.getElementById("superfiltr").style.left=mouseX-250;
               document.getElementById("superfiltr").style.top=mouseY-10;
              }
            }