function setActiveStyleSheet(title) {
  var i, a, main;
  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") == title) a.disabled = false;
    }
  } 
  //Adjust formobject on clientsida
  if (document.URL.indexOf("props.php") != -1) {
	if (document.forms.length > 0) {
		var index = (title == "null" || title == "default") ? 0 : ((title == "medium") ? 1 : 2 ) ;
		document.forms[0].textsize.selectedIndex = index;
	}
  }
  /*if (document.getElementById("textsize1") != null) {
	  var temp;
	  var prefix = 'url(images/';
	  var prefix1 = "";
	  var prefix2 = "";
	  var prefix3 = "";
	  var suffix = ".gif)";
	  var textsize1 = "textsize1";
	  var textsize2 = "textsize2";
	  var textsize3 = "textsize3";
	  
	  if (title == "big") {
		prefix3 = "_";
	  } else if (title == "medium") {
		prefix2 = "_";
	  } else {
		prefix1 = "_";
	  }
	  document.getElementById(textsize1).style.backgroundImage = prefix + prefix1 + textsize1 + suffix;
	  document.getElementById(textsize2).style.backgroundImage = prefix + prefix2 + textsize2 + suffix;
	  document.getElementById(textsize3).style.backgroundImage = prefix + prefix3 + textsize3 + suffix;
  }*/
}

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;
}
// for using plus and minus sign
function setStyles(direction) {
	if (getActiveStyleSheet() == "medium") {
		if (direction == "plus")
			setActiveStyleSheet('big');
		else
			setActiveStyleSheet('default');
	}
	else if (getActiveStyleSheet() == "big") {
		if (direction != "plus")
			setActiveStyleSheet('medium');
	}
	else {
		if (direction == "plus")
			setActiveStyleSheet('medium');
	}
}

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 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]; //alert(i + ":" + c);
    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(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet(); //alert(title);
  setActiveStyleSheet(title);
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("href").indexOf("noscript") != -1) {
			a.disabled = true;
		}
	}
  /*if (page != null)
  	initPage(page);*/
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);