// Set cookie function
function setCookie(name, value) {
 
       var now = new Date();
       // set expiry date last for 1 year after created
       var expires = new Date(now.valueOf()+365*24*60*60*1000);
       var curCookie = name + "=" + value +
           ((expires) ? "; expires=" + expires.toGMTString()+";" : ";");
       document.cookie = curCookie;
       //alert(document.cookie);
       //alert(expires.toString());
}


// Get content of a cookie
function getCookie(name) {
       var dc = document.cookie;
       var prefix = name + "=";
       var begin = dc.indexOf("; " + prefix);
       if (begin == -1) {
         begin = dc.indexOf(prefix);
         if (begin != 0) return null;
         
       } else
         begin += 2;
       var end = document.cookie.indexOf(";", begin);
       if (end == -1)
         end = dc.length;
       return unescape(dc.substring(begin + prefix.length, end));
}

function rnd() {
		rnd.today=new Date();
		rnd.seed=rnd.today.getTime();
        rnd.seed = (rnd.seed*9301+49297) % 233280;
        return rnd.seed/(233280.0);
};

function rand(number) {
        return Math.ceil(rnd()*number);
}

function banner_write() {
	var result;
 	result = (rand(3)-1);
	result = 0;
	if (result == 0) {
		document.write (" <embed src=\"11.swf\" quality=\"high\" pluginspage=\"http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash\" type=\"application/x-shockwave-flash\" width=\"468\" height=\"60\"></embed>");
	} else if (result == 1) {
		document.write ("<a href=\"http://www.hkpol.org\" target=\"_blank\"><img name=\"banner_ad_space\" src=\"images/banner2.gif\" width=\"468\" height=\"60\" border=\"0\"></a>");
	} else if (result == 2)	{
		document.write ("<a href=\"http://www.hkpol.org\" target=\"_blank\"><img name=\"banner_ad_space\" src=\"images/banner2.gif\" width=\"468\" height=\"60\" border=\"0\"></a>");
	}
}

function gourl(url) {
	tmpwindow = window.open(url,"seminar","width=800,height=600,status=yes");
	x = screen.availWidth;
	//y = screen.availHeight;
	//alert(y);
	if (x == 800) {
		tmpwindow.moveTo(-4,-23);	
	}
	tmpwindow.focus();
}

function freedemo() {
	gourl("seminar/video_seminar_chi.asp?seminar_id=165");
}

function freedemo_eng() {
	gourl("seminar/video_seminar_eng.asp?seminar_id=165");
}

function changever(){
	var temppath = window.top.location.href;
	if (temppath.lastIndexOf("_chi") >= 0) {
		version = "chi";
	} else if (temppath.lastIndexOf("_eng") >= 0) {
		version = "eng";
	}
	start_char = temppath.lastIndexOf("_"+version);
	if (version == "chi") {
		version = "eng";
	} else if (version == "eng") {
		version = "chi";
	}
	setCookie("lang_version", version)	
	temppath = temppath.substring(0,start_char) + "_" + version + temppath.substring(start_char + 4, temppath.length);
	window.top.location.href = temppath;
	
}

function closewindow() {
	window.close();
}

function MM_displayStatusMsg(msgStr) { //v1.0
  status=msgStr;
  document.MM_returnValue = true;
}

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];}
}