function move(elementid,direction,value,minimal,maximum){
moveobject = document.getElementById(elementid);
curtop = parseInt(moveobject.offsetTop);
curleft = parseInt(moveobject.offsetLeft);
switch (direction) {
case "up":
	if (curtop > minimum){ moveobject.style.top = curtop - value + "px"	}	
break;
case "down":
	if (curtop < maximum){ moveobject.style.top = curtop + value + "px"	}	
break;
case "left":
	if (curleft > minimum) { moveobject.style.left = curleft - value + "px" }
break;
case "right":
	if (curleft < maximum) { moveobject.style.left = curleft + value + "px" }
break;
}
/*end of function*/
}
</script>