//============    Image Mouse-over    ============
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

//font size

//Specify affected tags. Add or remove from list:
var tgs = new Array( 'div','table','tr','td','th','strong','a','span','li','ul');

//fontsize cookie value
var cookie_font = "cookieFont";

function addSize(){
	if (GetCookie(cookie_font) != null)
	{
		type = GetCookie(cookie_font);
	}else{
		type = "4";
	}
	if (parseInt(type) == 6)
	{
		newfontsize = 6;
	}else{
		newfontsize = parseInt(type) + 1;
	}

	changeFontSize(newfontsize);
}

function minusSize(){
	if (GetCookie(cookie_font) != null)
	{
		type = GetCookie(cookie_font);
	}else{
		type = "4";
	}
	if (parseInt(type) == 0)
	{
		newfontsize = 0;
	}else{
		newfontsize = parseInt(type) - 1;
	}

	
	changeFontSize(newfontsize);
}

function loadSize(){
	if (GetCookie(cookie_font) != null)
	{
		type = GetCookie(cookie_font);
	}else{
		type = "4";
	}

	newfontsize = parseInt(type);
	changeFontSize(newfontsize);
}

function changeFontSize(type){
	var szs = new Array('70%','80%','85%','95%','100%','103%');
	
	insideEle = document;
	for ( i = 0 ; i < tgs.length ; i++ ) {
		if (document.getElementById("font_control") != null){
			insideEle = document.getElementById("font_control");
			
			cTags = insideEle.getElementsByTagName( tgs[ i ] );
			for ( j = 0 ; j < cTags.length ; j++ ) {
				cTags[ j ].style.fontSize = szs[type];
			}
		}
	}	
	createCookie(cookie_font,type,1);
}




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 var expires = "";
 document.cookie = name + "=" + value + "; expires=" + expires;  

}

function GetCookie(name)
//讀取Cookie的原始值
{
    var arg = name + "=";
    var alen = arg.length;
    var clen = document.cookie.length;
    var i = 0;
    while (i < clen) {
        var j = i + alen;
        if (document.cookie.substring(i, j) == arg)
            return GetCookieVal(j);
        i = document.cookie.indexOf(" ", i) + 1;
        if (i == 0) break;
    }
    return null;
}

function GetCookieVal(offset)
//獲得Cookie解码后的值
{
    var endstr = document.cookie.indexOf(";", offset);
    if (endstr == -1)
        endstr = document.cookie.length;
    return unescape(document.cookie.substring(offset, endstr));
}


//刪除cookie
function DeleteCookie(name) {
 createCookie(name,"",-1);
}