<!--
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 replaceCharacters(conversionString,inChar,outChar){
  var convertedString = conversionString.split(inChar);
  convertedString = convertedString.join(outChar);
  return convertedString;
}



function route(to) { 
  dest=''+this.document.location;
  dest=replaceCharacters(dest,'/gb.hyd.gov.hk/gb/','/'); //remove X-server from sim-chi
  if (to=='sim' ){ 
    dest=replaceCharacters(dest,'://','://gb.hyd.gov.hk/gb/');
	to='chi';
  }
 dest=replaceCharacters(dest,'/chi/','/'+to+'/');
  this.document.location=dest;
}



function rand() { //v3.0
var bg1="../images/pic/image1.jpg"
var bg2="../images/pic/image2.jpg"
var bg3="../images/pic/image3.jpg"
var bg4="../images/pic/image4.jpg"
var bg5="../images/pic/image5.jpg"

var curr=Math.round(5*Math.random())
if (curr<=1)
bg=bg1
else if (curr<=2)
bg=bg2
else if (curr<=3)
bg=bg3
else if (curr<=4)
bg=bg4
else 
bg=bg5
document.write('<img src=\"'+bg+'">')

}

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];}
}

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 overLeftMenu(obj, img)
{
        if (document.images){
				//eval("document.images.menu" + obj + ".src = '../images/menu" + obj + "_o.gif'");
				obj.src = ImgPath + '/' + img + '_o.gif';
				
        }
}

function outLeftMenu(obj, img)
{
        if (document.images){
				//eval("document.images.menu" + obj + ".src = '../images/menu" + obj + ".gif'");
				obj.src = ImgPath + '/' + img + '.gif';
        }
}



function overTopMenu(obj, img)
{
        if (document.images){
				//eval("document.images." + obj + ".src = '../images/" + obj + "_f2.gif'");
				obj.src = ImgPath + '/' + img + '_f2.gif';
        }
}

function outTopMenu(obj, img)
{
        if (document.images){
				//eval("document.images." + obj + ".src = '../images/" + obj + ".gif'");
				obj.src = ImgPath + '/' + img + '.gif';
        }
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}



function simg(obj,url)
{
	if ( document.images )
    {obj.src = url;}
}



function showLayer(i){

//eval("simg(document.icon" + i + ",'../images/main_icon0" + i + "a.gif');")

        if (navigator.appName == 'Netscape' ){
                eval("document.layers.menu"+ i +".visibility = 'show';")
        }else{
                document.all['menu'+ i +''].style.visibility = 'visible';
        }
}

function hideLayer(i){

//eval("simg(document.icon" + i + ",'../images/main_icon0" + i + ".gif');")

        if (navigator.appName == 'Netscape'){
                eval("document.layers.menu" + i + ".visibility = 'hide';")
        }else{
                document.all['menu'+ i +''].style.visibility = 'hidden';
        }
}
var wnd;
function popup(url,width,height)
{
	wnd=window.open(url,"popup","height=" + height + ",width=" + width + ",status=no,toolbar=no,menubar=no");
	wnd.focus();
}

/*
function popup(url,features)
{
	wnd=window.open(url,"popup",features);
	wnd.focus();
}

function popup(url,top,left,width,height)
{
	wnd=window.open(url,"popup","height=" + height + ",width=" + width + ",top=" + top + ",left=" + left + ",status=no,toolbar=no,menubar=no");
	wnd.focus();
}
*/
//-->
