function moveElement(elementID,final_x,final_y,interval) {
	if (!document.getElementById) return false;
	if (!document.getElementById(elementID)) return false;
	var elem = document.getElementById(elementID);
	if (elem.movement) {
		clearTimeout(elem.movement);
	}
	var xpos = parseInt(elem.style.left);
	var ypos = parseInt(elem.style.top);
	if (xpos == final_x && ypos == final_y) {
		return true;
	}
	if (xpos < final_x) {
		xpos = xpos + 5;
	}
	if (xpos > final_x) {
		xpos = xpos - 5;
	}
	if (ypos < final_y) {
		ypos = ypos + 5;
	}
	if (ypos > final_y) {
		ypos = ypos - 5;
	}
	elem.style.left = xpos + "px";
	elem.style.top = ypos + "px";
	var repeat = "moveElement('"+elementID+"',"+final_x+","+final_y+","+interval+")";
	elem.movement = setTimeout(repeat,interval);
}