var menu1top=330
var menuleft=-115
var step = 10
var pause=50
var dir=1

function init() {
document.getElementById("menu1").style.left=menuleft
document.getElementById("menu1").style.top=menu1top
nowpos=menuleft
}


function movemenu() {
if(dir==1){nowpos+= step}
if(dir==0){nowpos-= step}

document.getElementById("menu1").style.left=nowpos
movetimer=setTimeout("movemenu()",pause) 

if(nowpos>0-step){
clearTimeout(movetimer)
dir=0
}

if(nowpos<=menuleft){
clearTimeout(movetimer)
dir=1
}

}