var mouse_over = true;

var dx = 4;
var dt = 10;

function move_left(id){
	if (mouse_over == true){
		var obj = document.getElementById(id);
		var objs = document.getElementById(id).style;
		if (obj.offsetLeft != null) {
			objs.left = (obj.offsetLeft + dx) + "px";
		} else if (objs.pixelLeft != null) {
			objs.pixelLeft += dx;
		} else ;//obj.moveBy(x,y);
		setTimeout("move_left('"+id+"')",dt);
	} else clearTimeout(); // else do nothing
}

function move_right(id){
	if (mouse_over == true){
		var obj = document.getElementById(id);
		var objs = document.getElementById(id).style;
		if (obj.offsetLeft != null) {
			objs.left = (obj.offsetLeft - dx) + "px";
		} else if (objs.pixelLeft != null) {
			objs.pixelLeft -= dx;
		} else ;//obj.moveBy(x,y);
		setTimeout("move_right('"+id+"')",dt);
	} else clearTimeout(); // else do nothing
}