function fontSwitch(styletitle) 
{
	
	var imgbutton = document.getElementById('fontsize_graphic');
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) 
	{
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) 
		{
			a.disabled = true;
			if(a.getAttribute("title") == styletitle) 
			{ 
				a.disabled = false; 
				//Set Graphic
				//alert(styletitle);
				switch(styletitle) 
				{
					case "largefont":
						imgbutton.src="/vimages/tbtn_textsize_decrease.png";
						imgbutton.onclick = function() { fontSwitch('regularfont'); }
						imgbutton.alt = "Decrease Text Size";
					break;
					case "regularfont":
						imgbutton.src="/vimages/tbtn_textsize_increase.png";
						imgbutton.onclick = function() { fontSwitch('largefont'); }
						imgbutton.alt = "Increase Text Size";
					break;
					default:
						imgbutton.src="/vimages/tbtn_textsize_increase.png";
						imgbutton.onclick = null;
					break;
				}
			}
		}
	}
};


function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) 
  {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("rel").indexOf("alt") == -1 && a.getAttribute("title")) return a.getAttribute("title");
  }
  return null;
};

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  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 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;
};