var myfonttitle;
var fontarray = new Array("Medium","Large","Extra");
readFontCookie();


function createCookie(name,value,days) {
  if (days != null) {
    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 readFontCookie() {
	myfonttitle = readCookie("fonttitle");
	if (myfonttitle==null)
		myfonttitle=fontarray[0];
	
	if (myfonttitle!=fontarray[0] && myfonttitle!=fontarray[1] && myfonttitle!=fontarray[2] ) 
		myfonttitle = fontarray[0];
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  var caLength = ca.length;
  for(var i=0;i < caLength;i++) {
    var c = TrimString(ca[i]);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}

function switchCss() {
/*
	var linkArray = document.getElementsByTagName("link");
	var linkArrayLength = linkArray.length;
	for(i=0; i<linkArrayLength; i++) 
	{
		a=linkArray[i];
		  
		// for all "stylesheet" in Link
		if (a.getAttribute("rel").indexOf("stylesheet")!=-1) 
		{
			
			var disable_flag = false;

			var id1 = a.getAttribute("id");
			if (id1 != null) {
				if (id1.indexOf("modeFormat")!=-1 )  {
					disable_flag = (id1.indexOf(myfonttitle) < 0);
				}
			}
			a.disabled = true;
			a.disabled = disable_flag;
		} 
	}
	//Alert("change to " +myfonttitle); 
	*/
	var obj = document.getElementById('divCont_district');
	if (myfonttitle=="Medium") {
		if(myLang == "tc"){
			document.getElementById('css0').href = '/css_js_sc/tc_style_medium.css';
		}else{
			document.getElementById('css0').href = '/css_js_sc/en_style_medium.css';
		}
		document.getElementById('imgMedium').src = '/images/font_size/Medium_on.gif';
		document.getElementById('imgLarge').src = '/images/font_size/Large_off.gif';
		document.getElementById('imgExtra').src = '/images/font_size/Extra_off.gif';
		if (obj!=null){
			if (!isIE){
					obj.style.setProperty("top", "365px", null);
			}else{
					obj.style.top='365px';
			}
		}
	}else if (myfonttitle=="Large") {
		if(myLang == "tc"){
			document.getElementById('css0').href = '/css_js_sc/tc_style_large.css';
		}else{
			document.getElementById('css0').href = '/css_js_sc/en_style_large.css';
		}
		document.getElementById('imgMedium').src = '/images/font_size/Medium_off.gif';
		document.getElementById('imgLarge').src = '/images/font_size/Large_on.gif';
		document.getElementById('imgExtra').src = '/images/font_size/Extra_off.gif';
		if (obj!=null){		
			if (!isIE){
				if (myLang=="en")
					document.getElementById('divCont_district').style.setProperty("top", "410px", null);
				else
					document.getElementById('divCont_district').style.setProperty("top", "370px", null);
			}else{
				if (myLang=="en")
					document.getElementById('divCont_district').style.top='410px';
				else
					document.getElementById('divCont_district').style.top='370px';
			}
		}
	}else if (myfonttitle=="Extra") {
		if(myLang == "tc"){
			document.getElementById('css0').href = '/css_js_sc/tc_style_extra.css';
		}else{
			document.getElementById('css0').href = '/css_js_sc/en_style_extra.css';
		}
		document.getElementById('imgMedium').src = '/images/font_size/Medium_off.gif';
		document.getElementById('imgLarge').src = '/images/font_size/Large_off.gif';
		document.getElementById('imgExtra').src = '/images/font_size/Extra_on.gif';
		if (obj!=null){
			if (!isIE){
				if (myLang=="en")
					document.getElementById('divCont_district').style.setProperty("top", "420px", null);
				else
					document.getElementById('divCont_district').style.setProperty("top", "395px", null);
			}else{
			  if (myLang=="en")
					document.getElementById('divCont_district').style.top='420px';
				else
					document.getElementById('divCont_district').style.top='395px';
			}
		}
	}
}
function changeFontTitle(ft) {
	// change global variable "myfonttitle"
	myfonttitle = ft;
	createCookie("fonttitle", myfonttitle, null);
	createCookie("fonttitle", myfonttitle, 60);
	if(myfonttitle == null){
		myfonttitle = 'Medium';
	}
	switchCss();
}
function TrimString(strIn) {
  return strIn.replace(/^\s\s*/, '').replace(/\s\s*$/, '');
}

function isIE()
{
  return /msie/i.test(navigator.userAgent) && !/opera/i.test(navigator.userAgent);
}