var eypos=0, ejump=-4;

//var eypos=339, ejump=4;

var menu_delay=2;
var show_time=5;

function do_menue(menu){
switch (menu) {
 case 'right': SwitchRightArrow(); break;
 case 'left' : SwitchLeftArrow(); break;

}
      
if(document.layers) document.menue.display='block'; else document.all.menue.style.display='block';
		ejump=-ejump;

		if(eypos<=0 || eypos>=339){	
                menue_fahren();
		}

}

function menue_fahren(){
        if(document.layers) document.menue.top=eypos; else document.all.menue.style.top=eypos;
        eypos+=ejump; 
		if(eypos>0 && eypos<339)  setTimeout("menue_fahren()", menu_delay);
		else FF=1;
}



arrow_right = 1;
arrow_left = 1;

function SwitchLeftArrow() {
switch (arrow_left) {
 case 1:
   document.getElementById('arrow_left').src = "/images/arrow_up.gif";
   arrow_left = 2;
   return(false);
case 2:
   document.getElementById('arrow_left').src = "/images/arrow_down.gif";
   arrow_left = 1;
   return(false);
 }
}

function SwitchRightArrow() {
switch (arrow_right) {
 case 1:
   document.getElementById('arrow_right').src = "/images/arrow_up.gif";
   arrow_right = 2;
   return(false);
case 2:
   document.getElementById('arrow_right').src = "/images/arrow_down.gif";
   arrow_right = 1;
   return(false);
 }
}