var ns4 = (document.layers);
var ie4 = (document.all && !document.getElementById);
var ie5 = (document.all && document.getElementById);
var ns6 = (!document.all && document.getElementById);
var is_not_in_frameset = (window.self == top);

function show(id){
	// Netscape 4
	if(ns4){
		document.layers[id].display = "block";
	}
	// Explorer 4
	else if(ie4){
		document.all[id].style.display = "block";
	}
	// W3C - Explorer 5+ and Netscape 6+
	else if(ie5 || ns6){
		document.getElementById(id).style.display = "block";
	}
}

function hide(id){
	// Netscape 4
	if(ns4){
		document.layers[id].display = "none";
	}
	// Explorer 4
	else if(ie4){
		document.all[id].style.display = "none";
	}
	// W3C - Explorer 5+ and Netscape 6+
	else if(ie5 || ns6){
		document.getElementById(id).style.display = "none";
	}
}

function hide_element_if_in_frame(id){
	if (is_not_in_frameset==false){
		hide(id);
	}
}

function show_element_if_not_in_frame(id){
	if (is_not_in_frameset){
		show(id);
	}
}