toggle_on = function(this_obj, this_switch, offset_top, offset_left) {
	var obj_position = findPos(document.getElementById(this_switch));
	document.getElementById(this_obj).style.visibility = "visible";
	document.getElementById(this_obj).style.zIndex = 10;
	document.getElementById(this_obj).style.top = obj_position[1] + offset_top;
	document.getElementById(this_obj).style.left = obj_position[0] + offset_left;
}
toggle_off = function(this_obj) {
	document.getElementById(this_obj).style.top = -2000;
}

findPos = function(obj) {
	var curleft = curtop = 0;
	if (obj.offsetParent) {
		curleft = obj.offsetLeft
		curtop = obj.offsetTop
		while (obj = obj.offsetParent) {
			curleft += obj.offsetLeft
			curtop += obj.offsetTop
		}
	}
	return [curleft,curtop];
}