// This Javascript is written by Peter Velichkov (http://blog.creonfx.com)
// and is distributed under the following license : http://creativecommons.org/licenses/by-sa/3.0/
// Use and modify all you want just keep this comment. Thanks

var incdec = 0;
var headID = document.getElementsByTagName("head")[0];
var cssNode = document.createElement("style");
cssNode.type = 'text/css';
cssNode.id="resizingText";

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 var 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;*/
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}

function loadCss(x){
	try{
		var cssStr = '\
		div, td, tr, p, b, table, strong, em, a, h1, h2, h3, pre, sub, sup, i, th, cp, ul, ol, li, dt, dd, input, span {font-size:' + (100+x) +'%;}\
		';
		if(cssNode.styleSheet){
			cssNode.styleSheet.cssText = cssStr; // for IE
		} else {
			var cssText = document.createTextNode(cssStr);
			cssNode.appendChild(cssText); // breaks ie
			//cssNode.innerHTML = cssStr; // breaks saffari
		}
		if(!document.getElementById("resizingText"))headID.appendChild(cssNode);
	}catch(err){ 
		// some debugging code
	}
}

function increaseFontSize() {
	if(incdec < 6){
		incdec++;
		loadCss(incdec);
		createCookie('textsizeConselho',incdec,1); 
	}
}

function decreaseFontSize() {
	if(incdec > -1){
		incdec--;
		loadCss(incdec);
		createCookie('textsizeConselho',incdec,1); 
	}		
}

var x = readCookie('textsizeConselho')
if (x && x!=0) {
	x = parseInt(x);
	incdec = x;
	loadCss(x);
}

//eraseCookie('textsize');
function doC() {
    var headID = document.getElementsByTagName("head")[0];
    var cssNode = document.createElement('link');
    cssNode.type = 'text/css';
    cssNode.rel = 'stylesheet';
    cssNode.href = '/layout/contrast.css';
    cssNode.media = 'screen';
    cssNode.id = "contr";
    headID.appendChild(cssNode);
}
function remC() {

    var headID = document.getElementsByTagName("head")[0];
    var childID = document.getElementById("contr");
    headID.removeChild(childID);
}
function contraste(d) {
    var childID = document.getElementById("contr");
    if (childID != null) {
        if (d == 'd') {
            remC();
        }
    }
    else {
        if (d == 'a') {
            doC();
        }
    }
}