//
// Text-resize javascript, let your users resize your text 
//

var ts_sizeSmall="1.4";  	// small
var ts_sizeNormal="1.8"; 	// normal
var ts_sizeLarge="2"; 	// large
//var ts_sizeSmallImage="images/n-tool-smaller.gif";
//var ts_sizeNormalImage="images/n-tool-normal.gif";
//var ts_sizeLargeImage="images/n-tool-larger.gif";

function ts_setCookie (name, value, expires, path, domain, secure) {
    var curCookie = name + "=" + escape(value) + ((expires) ? "; expires=" + expires.toGMTString() : "") + ((path) ? "; path=" + path : "") + ((domain) ? "; domain=" + domain : "") + ((secure) ? "; secure" : "");
    document.cookie = curCookie;
}

function ts_getCookie (name) {
    var prefix = name + '=';
    var c = document.cookie;
    var nullstring = '';
    var cookieStartIndex = c.indexOf(prefix);
    if (cookieStartIndex == -1) return nullstring;
    var cookieEndIndex = c.indexOf(";", cookieStartIndex + prefix.length);
    if (cookieEndIndex == -1) cookieEndIndex = c.length;
    return unescape(c.substring(cookieStartIndex + prefix.length, cookieEndIndex));
}

function showReadabilityMenu (myTitle) {
	
	document.write("<span>" + myTitle + "</span>");
	if (ts_fontsize!=ts_sizeSmall) 
    	document.write('<a href="#" onclick="changeFontSize('+ts_sizeSmall+');return false;" title="Display normal text"><img src="'+ ts_sizeSmallImage +'" alt="Display normal text size"></a>');
    else document.write('<img src="'+ ts_sizeSmallImage +'" alt="Decrease text size">');
	
	if (ts_fontsize!=ts_sizeNormal) 
    	document.write('<a href="#" onclick="changeFontSize('+ts_sizeNormal+');return false;" title="Display larger text size"><img src="'+ ts_sizeNormalImage +'" alt="Display larger text size"></a>');
    else document.write('<img src="'+ ts_sizeNormalImage +'" alt="Normal text size">');
	
	if (ts_fontsize!=ts_sizeLarge) 
    	document.write('<a href="#" onclick="changeFontSize('+ts_sizeLarge+');return false;" title="Display largest text size"><img src="'+ ts_sizeLargeImage +'" alt="Display largest text size"></a>');
    else document.write('<img src="'+ ts_sizeLargeImage +'" alt="Increase text size">');
	
}

function changeFontSize (fontsize) {
    var untilDate = new Date();
    untilDate.setTime( untilDate.getTime() + 365 * 24 * 60 * 60 * 1000); // valid for 1 year
    ts_setCookie('ts_fontsize', fontsize, untilDate, '/');
    self.location.href = self.location.href;

	}
	
	var ts_fontsize = ts_getCookie('ts_fontsize');
	if (!ts_fontsize) var ts_fontsize = ts_sizeSmall;
	document.getElementsByTagName("body")[0].style.fontSize = ts_fontsize + "em";