function inputFocus(field, value) {
	if (field.value == value) {
		field.value = "";
	}
}

function inputBlur(field, value) {
	if (field.value == "") {
		field.value = value;
	}
}

function fontLarge() {
	active = getActiveStyleSheet();
	switch (active) {
		case 'small' :
			setActiveStyleSheet('large');
			break;
		case 'large' :
			break;
		default :
			setActiveStyleSheet('small');
			break;
	}
}

function fontSmall() {
	active = getActiveStyleSheet();
	switch (active) {
		case 'small' :
			break;
		case 'large' :
			setActiveStyleSheet('small');
			break;
		default :
			setActiveStyleSheet('small');
			break;
	}
}

function setActiveStyleSheet(title) {
	var i, a, main;
	for (i=0; (a=document.getElementsByTagName("link")[i]); i++) {
		if (a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
			a.disabled = true;
			if (a.getAttribute("title") == title) {
				a.disabled = false;
			}
		}
	}
}

function getActiveStyleSheet() {
	var i, a;
	for (i=0; (a=document.getElementsByTagName("link")[i]); i++) {
		if (a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) {
			return a.getAttribute("title");
		}
	}
	return null;
}

function getPreferredStyleSheet() {
	return ('small');
}

function createCookie(name, value, days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	} else {
		expires = "";
	}
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name+"=";
	var ca = document.cookie.split(';');
	for (var i = 0; i<ca.length; i++) {
		var c = ca[i];
		while (c.charAt(0) == ' ') {
			c = c.substring(1, c.length);
		}
		if (c.indexOf(nameEQ) == 0) {
			return c.substring(nameEQ.length, c.length);
		}
	}
	return null;
}

window.onload = function(e) {
	var cookie = readCookie("style");
	var title = cookie ? cookie : getPreferredStyleSheet();
	setActiveStyleSheet(title);
};

window.onunload = function(e) {
	var title = getActiveStyleSheet();
	createCookie("style", title, 365);
};

var cookie = readCookie("style");

var title = cookie ? cookie : getPreferredStyleSheet();

if (title == 'null') {
	title = getPreferredStyleSheet();
}