/* change font size */

function changeFontSize(newsize) {
  var hasCookie = readCookie('fontsize');
  if ($('content') != null){
    if (newsize == '0') {
  	  if (hasCookie) {
  	    if (newsize == '0') {
		  document.getElementById("content").style.fontSize = hasCookie+"em";
  	  	} else {
  	  	  document.getElementById("content").style.fontSize = newsize+"em";
  		}
  	  }
    } else {
		document.getElementById("content").style.fontSize = newsize+"em";
  	  	var date = new Date();
  			date.setTime(date.getTime()+(30*24*60*60*1000));
  			var expires = "; expires="+date.toGMTString();
  			document.cookie = "fontsize="+newsize+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 () { changeFontSize('0'); }