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;
    }
  }
}

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;
}

// for chage caption width function 
function change_width( obj ){
	for( k = 0; k < obj.length; k++ ){

		var innerImg	= obj[k].getElementsByTagName("img");
		var width 		= 0;

		if(innerImg.length > 1){
			innerImg	= obj[k].getElementsByTagName("div");
		}

		for(i=0 ; i<innerImg.length ; i++){
			width		+= innerImg[i].clientWidth;
		}
		
		obj[k].style.width = width + "px";

	}
}

// propaty dump function 
var dumpObj = function(o){
  var str = "";
  for(var i in o) {
    str = str + "\n" + i + "\t"+ o[i];
  }
  alert(str);
}

window.onload = function(e) {


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

	// change caption width
	var imgObj 	= document.getElementsByClassName("imgLeft");
//alert( dumpObj( imgObj) );

	if( !imgObj.concat ){
		// for firefox 3
		// can't use each, concat function
		if( imgObj.length > 0 )	change_width( imgObj );
	
		imgObj	= document.getElementsByClassName("imgRight");
		if( imgObj.length > 0 )	change_width( imgObj );

		imgObj	= document.getElementsByClassName("imgCenter");
		if( imgObj.length > 0 )	change_width( imgObj );

		imgObj	= document.getElementsByClassName("pic1");
		if( imgObj.length > 0 )	change_width( imgObj );

		imgObj	= document.getElementsByClassName("pic2");
		if( imgObj.length > 0 )	change_width( imgObj );

		imgObj	= document.getElementsByClassName("picGroup");
		if( imgObj.length > 0 )	change_width( imgObj );

	}
	else{
		imgObj	= imgObj.concat( document.getElementsByClassName("imgRight") );
		imgObj	= imgObj.concat( document.getElementsByClassName("imgCenter") );
		imgObj	= imgObj.concat( document.getElementsByClassName("pic1") );
		imgObj	= imgObj.concat( document.getElementsByClassName("pic2") );

		if(navigator.userAgent.indexOf("MSIE") == -1){
			imgObj	= imgObj.concat( document.getElementsByClassName("picGroup") );
		}else{
			ieObj	= document.getElementsByClassName("picGroup");
			ieObj.each(function(obj){
				width = obj.getElementsByTagName("img")[0].clientWidth + obj.getElementsByTagName("img")[1].clientWidth + 20 + "px";
				obj.style.width = width;
			});
		}
		
		imgObj.each(function(obj){
			var innerImg	= obj.getElementsByTagName("img");
			var width 		= 0;

			if(innerImg.length > 1){
				innerImg	= obj.getElementsByTagName("div");
			}

			for(i=0 ; i<innerImg.length ; i++){
				width		+= innerImg[i].clientWidth;
			}
			
			obj.style.width = width + "px";
		});

	}
}

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

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

//menu.js

function effectMenu(bpref) {
	if (! document.getElementById) return;

	var tmp = document.getElementById(bpref).style.display;
	
	if( tmp == "none" ){
		document.getElementById(bpref).style.display = "";
	}
	else{
		document.getElementById(bpref).style.display= "none";
	}
}