var
	setShadow_Timer,
	shadowTarget_Height = 0;

function setShadow() {
	if (getElement("shadowTarget") && getElement("shadowItem_l") && getElement("shadowItem_r")) {
		var shadowTarget = getCoordinates("shadowTarget");
		if (shadowTarget.height && shadowTarget.height != shadowTarget_Height) {
			getElement("shadowItem_l").style.height = getElement("shadowItem_r").style.height = shadowTarget.height + "px";
			getElement("shadowItem_l").className = getElement("shadowItem_r").className = "";
			shadowTarget_Height = shadowTarget.height;
		}
	}
}

setShadow_Timer = window.setInterval("setShadow()", 250);