// Set Highlighed menu option
function SetHighlightedMenuOption() {

   var url = document.location.href;
   var nav = document.getElementById("mainMenu");

   var links = nav.getElementsByTagName("a");
   var found = false;
   for (var i = 0; i < links.length && !found; i++) {
      var currentPage = links[i].href;
      if (url.match(currentPage) != null) {
         found= true;
         var liParent = links[i].parentNode;
         links[i].setAttribute("class", "mainMenuSelected");
         liParent.setAttribute("class", "mainMenuSelected");     
      }
   }
}
function SetFont() {
    var stylesheet = document.getElementById('stylesheet');
    if (readCookie("fontSize") != null && readCookie("fontSize") == "large") {
        stylesheet.href = "style/hudsonLibrary-Large.css";
    }
    else if (readCookie("fontSize") != null && readCookie("fontSize") == "medium") {
        stylesheet.href = "style/hudsonLibrary-Medium.css";
    }
    else {
        stylesheet.href = "style/hudsonLibrary.css";
    }
}
function changeFont(size) {
    if (size == "large") {
        createCookie("fontSize", "large", 24);
    }
    else if (size == "medium") {
        createCookie("fontSize", "medium", 24);
    }
    else {
        createCookie("fontSize", "small", 24);
    }
    SetFont();
}
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 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 ShowMenu()
{  
   alert('show menu');
}
function HideMenu()
{
   
}