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);
	}

	if (!elem.style.left) {
		elem.style.left = "0px";
	}
	if (!elem.style.top) {
		elem.style.top = "0px";
	}
	
	var xpos = parseInt(elem.style.left);
	var ypos = parseInt(elem.style.top);
	//alert(xpos);
	if (xpos == final_x && ypos == final_y) {
		return true;
	}
	if (xpos < final_x) {
		var dist = Math.ceil((final_x - xpos)/10);
		xpos = xpos + dist;
	}
	if (xpos > final_x) {
		var dist = Math.ceil((xpos - final_x)/10);
		xpos = xpos - dist;
	}
	if (ypos < final_y) {
		var dist = Math.ceil((final_y - ypos)/10);
		ypos = ypos + dist;
	}
	if (ypos > final_y) {
		var dist = Math.ceil((ypos - final_y)/10);
		ypos = ypos - dist;
	}
	elem.style.left = xpos +2 + "px";
	elem.style.top = ypos + "px";
	
	var repeat = "moveElement('" + elementID + "', " + final_x + ", " + final_y + ", " + interval + ")";	
	elem.movement = setTimeout(repeat, interval);
	
}