function setVisibility(layer,on) {
	if (on) {
		if (DOM) {
			document.getElementById(layer).style.visibility = "visible";
		} else if (NS4) {
			document.layers[layer].visibility = "show";
		} else {
			document.all[layer].style.visibility = "visible";
		}
	} else {
		if (DOM) {
			document.getElementById(layer).style.visibility = "hidden";
		} else if (NS4) {
			document.layers[layer].visibility = "hide";
		} else {
			document.all[layer].style.visibility = "hidden";
		}
	}
}
function isVisible(layer) {
	if (DOM) {
		return (document.getElementById(layer).style.visibility == "visible");
	} else if (NS4) {
		return (document.layers[layer].visibility == "show");
	} else {
		return (document.all[layer].style.visibility == "visible");
	}
}
function setLeft(layer,x) {
	if (DOM && !Opera5) {
		document.getElementById(layer).style.left = x + "px";
	} else if (Opera5) {
		document.getElementById(layer).style.left = x;
	} else if (NS4) {
		document.layers[layer].left = x;
	} else {
		document.all[layer].style.pixelLeft = x;
	}
}
function getOffsetLeft(layer) {
	var value = 0;
	if (DOM) {
		object = document.getElementById(layer);
		value = object.offsetLeft;
		while (object.tagName != "BODY" && object.offsetParent) {
			object = object.offsetParent;
			value += object.offsetLeft;
		}
	} else if (NS4) {
		value = document.layers[layer].pageX;
	} else {		if (document.all["IE4" + layer]) {
			layer = "IE4" + layer;
		}
		object = document.all[layer];
		value = object.offsetLeft;
		while (object.tagName != "BODY") {
			object = object.offsetParent;
			value += object.offsetLeft;
		}
	}
	return (value);
}
function setTop(layer,y) {
	if (DOM && !Opera5) {
		document.getElementById(layer).style.top = y + "px";
	} else if (Opera5) {
		document.getElementById(layer).style.top = y;
	} else if (NS4) {
		document.layers[layer].top = y;
	} else {
		document.all[layer].style.pixelTop = y;
	}
}
function getOffsetTop(layer) {
	var value = 0;
	if (DOM) {
		object = document.getElementById(layer);
		value = object.offsetTop;
		while (object.tagName != "BODY" && object.offsetParent) {
			object = object.offsetParent;
			value += object.offsetTop;
		}
	} else if (NS4) {
		value = document.layers[layer].pageY;
	} else {		if (document.all["IE4" + layer]) {
			layer = "IE4" + layer;
		}
		object = document.all[layer];
		value = object.offsetTop;
		while (object.tagName != "BODY") {
			object = object.offsetParent;
			value += object.offsetTop;
		}
	}
	return (value);
}
function setWidth(layer,w) {
	if (DOM) {
		document.getElementById(layer).style.width = w;
	} else if (NS4) {
	} else {
		document.all[layer].style.pixelWidth = w;
	}
}
function getWidth(layer) {
	if (DOM) {
		return document.getElementById(layer).offsetWidth;
	} else if (NS4) {
	} else {
		return document.all[layer].style.pixelWidth;
	}
}
function getHeight(layer) {
	if (DOM) {
		return document.getElementById(layer).offsetHeight;
	} else if (NS4) {
	} else {
		return document.all[layer].style.pixelHeight;
	}
}
function getOffsetWidth(layer) {
	var value = 0;
	if (DOM && !Opera56) {
		value = document.getElementById(layer).offsetWidth;
		if (isNaN(value)) {
			if (abscissaStep) {					value = abscissaStep;
			} else {
				value = 0;
			}
		}
	} else if (NS4) {
		value = document.layers[layer].document.width;
	} else if (Opera56) {
		value = document.getElementById(layer).style.pixelWidth;
	} else {		if (document.all["IE4" + layer]) {
			layer = "IE4" + layer;
		}
		value = document.all[layer].offsetWidth;
	}
	return (value);
}
function setHeight(layer,h) {
	if (h<=0) return;
	if (DOM) {
		document.getElementById(layer).style.height = h;
	} else if (NS4) {
	} else {
		document.all[layer].style.pixelHeight = h;
	}
}
function getOffsetHeight(layer) {
	var value = 0;
	if (DOM && !Opera56) {
		value = document.getElementById(layer).offsetHeight;
		if (isNaN(value)) {
			value = 25;
		}
	} else if (NS4) {
		value = document.layers[layer].document.height;
	} else if (Opera56) {
		value = document.getElementById(layer).style.pixelHeight;
	} else {		if (document.all["IE4" + layer]) {
			layer = "IE4" + layer;
		}
		value = document.all[layer].offsetHeight;
	}
	return (value);
}
function getWindowWidth() {
	var value = 0;
	if ((DOM && !IE) || NS4 || Konqueror || Opera) {
		value = top.innerWidth;
	} else {	// IE
		if (document.documentElement && document.documentElement.clientWidth) {
			value = document.documentElement.clientWidth;
		} else if (document.body) {
			value = document.body.clientWidth;
		}
	}
	if (isNaN(value)) {
		value = top.innerWidth;
	}
	return (value);
}
function getWindowXOffset() {
	var value = 0;
	if ((DOM && !IE) || NS4 || Konqueror || Opera) {
		value = window.pageXOffset;
	} else {	// IE
		if (document.documentElement && document.documentElement.scrollLeft) {
			value = document.documentElement.scrollLeft;
		} else if (document.body) {
			value = document.body.scrollLeft;
		}
	}
	return (value);
}
function getWindowHeight() {
	var value = 0;
	if ((DOM && !IE) || NS4 || Konqueror || Opera) {
		value = top.innerHeight;
	} else {		if (document.documentElement && document.documentElement.clientHeight) {
			value = document.documentElement.clientHeight;
		} else if (document.body) {
			value = document.body.clientHeight;
		}
	}
	if (isNaN(value)) {
		value = top.innerHeight;
	}
	return (value);
}
function getWindowYOffset() {
	var value = 0;
	if ((DOM && !IE) || NS4 || Konqueror || Opera) {
		value = window.pageYOffset;
	} else {		if (document.documentElement && document.documentElement.scrollTop) {
			value = document.documentElement.scrollTop;
		} else if (document.body) {
			value = document.body.scrollTop;
		}
	}
	return (value);
}
function setLayerPos(layer, parent_layer) {
	if (getOffsetLeft(parent_layer) + getWidth(layer) > getWindowWidth()) {
		if (IE55) setLeft('if_'+layer, getOffsetLeft(parent_layer) + 3 + getWidth(parent_layer) - getWidth(layer));
		setLeft(layer, getOffsetLeft(parent_layer) + 3 + getWidth(parent_layer) - getWidth(layer));
	} else {
		if (IE55) setLeft('if_'+layer, getOffsetLeft(parent_layer) - 3);
		setLeft(layer, getOffsetLeft(parent_layer) - 3);
	}
	if (IE55) setTop('if_'+layer, getOffsetTop(parent_layer) + getOffsetHeight(parent_layer));
	setTop(layer, getOffsetTop(parent_layer) + getOffsetHeight(parent_layer));
}
function setLayerPosXY(layer, top, left) {
	var lpadding = 5;
	var lw = getWidth(layer);
	var lh = getHeight(layer);

	adjLeft = left + document.body.scrollLeft;
	if (adjLeft + lw > getWindowWidth() - lpadding) {
		if (adjLeft - lw > lpadding) adjLeft -= lw;
		else adjLeft = getWindowWidth() - lw - lpadding;
	}
	if (adjLeft < lpadding) adjLeft = lpadding;

	adjTop = top + document.body.scrollTop;
	if (adjTop + lh > getWindowHeight()) {
		if (adjTop - lh > lpadding) adjTop -= lh;
		else adjTop = getWindowHeight() - lh - lpadding;
	}
	if (adjTop < lpadding) adjTop = lpadding;
	
	if (IE55) setLeft('if_'+layer, adjLeft);
	setLeft(layer, adjLeft);
	if (IE55) setTop('if_'+layer, adjTop);
	setTop(layer, adjTop);
}