/* Toggle html attributes e.g. disable or enable href */
function disableAnchor(obj, disable){
  if(disable){
    var onmouseout = obj.getAttribute("onmouseout");
    if(onmouseout && onmouseout != "" && onmouseout != null){
       obj.setAttribute('href_bak', onmouseout);
    }
    obj.removeAttribute('onmouseout');
    //obj.style.color="gray";
  }
  else{
    obj.setAttribute('onmouseout', obj.attributes['href_bak'].nodeValue);
    //obj.style.color="blue";
  }
}


/* Stylesheet switching */
function switchStyleSheet(dir) {
	var title;
	if(dir == 'up'){
		if(getActiveStyleSheet() == 'sml'){
			title = 'med';
		} else {
			title = 'lge';
		}
	} else {
		if(getActiveStyleSheet() == 'lge'){
			title = 'med';
		} else {
			title = 'sml';
		}
	}
	//var title = (getActiveStyleSheet() == 'default' || getActiveStyleSheet() == null) ? 'lge' : 'default';
	//alert(getActiveStyleSheet());
	setActiveStyleSheet(title);
}

function setActiveStyleSheet(title) {
	var i, a, main, imgname, imgobj;
	imgname = 'hdr-txtresize-' + title;
	document[imgname].active = false;
	//alert(title);
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
			imgname = 'hdr-txtresize-' + a.getAttribute("title");
			document[imgname].active = false;
			document[imgname].src = '/assets/images/template/hdr-txtresize-' + a.getAttribute("title") + '-off.gif';
			a.disabled = true;
			if(a.getAttribute("title") == title) a.disabled = false;
		}
	}
	imgname = 'hdr-txtresize-' + title;
	document[imgname].src = '/assets/images/template/hdr-txtresize-' + title + '-over.gif';
	document[imgname].active = true;
}

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 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];
    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();
//  setActiveStyleSheet(title);
//}

addDOMLoadEvent(function(e) {
	var cookie = readCookie("style");
	var title = cookie ? cookie : getPreferredStyleSheet();
	//alert(title);
	if(title == null || title == 'null' || title == ''){
	  title = "sml";
	}	
	setActiveStyleSheet(title);
});

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

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