function toggleTable (el) {
	var myElement = document.getElementById(el);
	var myImage = document.getElementById(el + "-bug");
	var agt = navigator.userAgent.toLowerCase();

	if (!myElement.style.display || myElement.style.display == "none") {
		if (agt.indexOf("win") != -1 && agt.indexOf("msie") != -1) {
			myElement.style.display = "inline";
		}
		else {
			myElement.style.display = "table-row";
		}

		myImage.src = "images/drill_d.gif";
	}
	else {
		myElement.style.display = "none";
		myImage.src = "images/drill_r.gif";
	}
}