function swap(x, i) {
	if (!x.src) { x = document.getElementById(x); }
	var strOver  = "_on.gif";
	var strOff = ".gif";
	var strImg = x.src;
	if (i == 1) { x.src = strImg.replace(strOff,strOver); }
	else { x.src = strImg.replace(strOver,strOff); }
	return;
}

function clearField(field, text) {
	if (field.value == text) { field.value = ""; }
	return;
}

function fillField(field, text) {
	if (isblank(field.value)) { field.value = text; }
	return;
}

function isblank(x) {
	var blank = true;
	for (i = 0; i < x.length; i++) {
		if (x.charAt(i) != ' ') { blank = false; }
	}
	return blank;
}

function toggleNav(id) {
	var divs = document.getElementsByTagName("div");
	for (i = 0; i < divs.length; i++) {
		if (divs[i].id.indexOf("nav-sub-") != -1 && divs[i].style.display != "none") {
			Effect.toggle(divs[i].id,'blind');
			document.getElementById(divs[i].id+"-arrow-d").style.visibility = "visible";
			document.getElementById(divs[i].id+"-arrow-l").style.visibility = "hidden";
		}
	}


	Effect.toggle(id,'blind');
	
	if (document.getElementById(id).style.display == "none") {
		document.getElementById(id+"-arrow-d").style.visibility = "hidden";
		document.getElementById(id+"-arrow-l").style.visibility = "visible";
	}
	else {
		document.getElementById(id+"-arrow-d").style.visibility = "visible";
		document.getElementById(id+"-arrow-l").style.visibility = "hidden";
	}
	
	
	
	return false;
}