POPOVER = false;
POPINTERVAL = "";
POPLAST = "";

function popon(element_id) {
	//turn last element off
	if (POPLAST != "") {
		if (document.getElementById("pop_" + POPLAST) != null)
			document.getElementById("pop_" + POPLAST).className = "popup";
			
		document.getElementById("img_" + POPLAST).src = PATH_IMAGES + "/toolbar/" + POPLAST + "_off.jpg";
		window.clearInterval(POPINTERVAL);
	}
	
	//turn current div element on
	if (element = document.getElementById("pop_" + element_id)) {
		element.className = "popupShow";
	}
	
	POPINTERVAL = window.setInterval("popoff('" + element_id + "')", "200");
	POPOVER = true;
	document.getElementById("img_" + element_id).src = PATH_IMAGES + "/toolbar/" + element_id + "_on.jpg";
	POPLAST = element_id;
}

function popoff(element_id) {
	if (POPOVER == false) {
		if (element = document.getElementById("pop_" + element_id)) {
			element.className = "popup";
		}
		window.clearInterval(POPINTERVAL);
		document.getElementById("img_" + element_id).src = PATH_IMAGES + "/toolbar/" + element_id + "_off.jpg";
	}	
}