var URLPREFIX = 'http://www.skyalbum.com.hk/';
var URLCARTPREFIX = 'https://www.skyalbum.com.hk/';

function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

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_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}

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_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];}
}

function funChangeLang(TheForm,lang){

	TheForm.txtLang.value=lang;
	TheForm.action="";
	TheForm.submit();	
}


function funTextCounter(field, countfield, maxlimit) {

if(maxlimit.length == 0){
	maxlimit = newMaxLimit;
}
		
if(field){
if (field.value.length > maxlimit) // if too long...trim it!
field.value = field.value.substring(0, maxlimit);
// otherwise, update 'characters left' counter
else 
countfield.value = maxlimit - field.value.length;
}
}

function trim(str)
{
while(str.charAt(0)==' ')
str=str.substring(1,str.length);

return str;
}

function rtrim(str)
{
	var whitespace = new String(" \t\n\r");
	var s = new String(str);
	if (whitespace.indexOf(s.charAt(s.length-1)) != -1) 
	{
		var i = s.length - 1;       // Get length of string
		while (i >= 0 && whitespace.indexOf(s.charAt(i)) != -1)
		i--;
		s = s.substring(0, i+1);
	}

	return s;
}


function clickIE4(){
	if (event.button==2){
		return false;
	}
}

function clickNS4(e){
	if (document.layers||document.getElementById&&!document.all){
		if (e.which==2||e.which==3){
			return false;
		}
	}
}

if (document.layers){
	document.captureEvents(Event.MOUSEDOWN);
	document.onmousedown=clickNS4;
}
else if (document.all&&!document.getElementById){
	document.onmousedown=clickIE4;
}

//document.oncontextmenu=new Function("return false")


var timeOutIndex;

function scrolltxt(inputId,scrollsize) {
	
	if (document.getElementById(inputId).value.length > scrollsize){
    	document.getElementById(inputId).value = document.getElementById(inputId).value.substring(1) + document.getElementById(inputId).value.substring(0,1);
    	timeOutIndex = setTimeout('scrolltxt("'+inputId+'","'+scrollsize+'")',200);
	}
}
function stopScroll(iField,hField){	
	document.getElementById(iField).value = document.getElementById(hField).value;
	clearTimeout(timeOutIndex);
}
function addspace(item,num,scrollsize){
	var num=3;//fixed space
	if (item.value.length > scrollsize) {
		for (i=0;i<num;i++){
			item.value+=" ";
		}	
	}
}

//SN 21-07-07
function tabHoverChange(tab, bg_color, font_color){	
	document.getElementById(tab).style.background = bg_color;
	document.getElementById(tab).style.color = font_color;
}