// text resizing
var currentTextSize = null;
var currentLineHeight = null;
// check for cookie
if (get_text_cookie("vvfontsize")) {
    currentTextSize = parseInt(get_text_cookie("vvfontsize"));
} else {
    currentTextSize = 12;
    createCookie("vvfontsize",currentTextSize,1000);
}
currentLineHeight = currentTextSize + 6;

function textSize(dir) {
    if (dir == 'up') {
        if (currentTextSize <= 16) {
            currentTextSize += 1;
        }
    } else if (dir == 'down') {
        if (currentTextSize >= 11) {
            currentTextSize -= 1;
        }
    }
    currentLineHeight = currentTextSize + 6;
    document.getElementById('corpArticol').style.fontSize = currentTextSize + 'px';
    document.getElementById('corpArticol').style.lineHeight = currentLineHeight + 'px';
    // write/rewrite cookie
    createCookie("vvfontsize",currentTextSize,1000);
}

function get_text_cookie ( cookie_name )
{
  var results = document.cookie.match ( cookie_name + '=(.*?)(;|$)' );

  if ( results ) {
    return ( unescape ( results[1] ) );
  }
  else { return null; }
}

// creates a cookie with the given parameters
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=/";
}