function each(ar, funky) {for(var i=0; i < ar.length; i++) funky(ar[i])};
function $a(num) {return Math.abs(num)}
function $f(num) {return parseFloat(num||0)}
function fold(plus, content, force) { 
	if(plus) $(plus).innerHTML = force ? force : ($(plus).innerHTML == '+' ? '-': '+')
	force? ($(content).style.display=force=='+'?'none':'block') : Toggle.display(content)
	if(force) write_location('#'+content)
}
function show(imageSrc) {
	if (document.images) document.images['mapimage'].src = imageSrc;
}