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_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_findObj(n, d) { //v3.0
  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); 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];}
}


	var NS4 = (document.layers) ? 1 : 0;
	var IE4 = ((document.all) && (parseInt(navigator.appVersion)>=4)) ? 1 : 0;
	var ver4 = (NS4 || IE4) ? "H" : "L";

	// Will update the "Ver" field in the form below according to the javascript abilities of
	// the browser the users surf with
	function defineVerField()
	{
		if (document.images && ver4 == 'L')
			document.forms['Params'].elements['Ver'].value = 'M';	// js1.1 enabled browser
		else document.forms['Params'].elements['Ver'].value = ver4;
	}

	// Open the tutorial popup
	function tutorial_popup()
	{
		window.focus();
		tutorial_popupWin = window.open("chat/tutorial_popup.php3?L=english&Ver="+ver4,"tutorial_popup","resizable=yes,scrollbars=yes,toolbar=yes,menubar=yes,status=yes");
		tutorial_popupWin.focus();
	}

	// Open the users popup according to the DHTML capacities of the browser
	function users_popup()
	{
		window.focus();
		users_popupWin = window.open("chat/users_popup"+ver4+".php3?From=..%2Findex.php&L=english","users_popup_c621bbb39de104ab716d0c3f74fb1782","width=180,height=300,resizable=yes,scrollbars=yes");
		users_popupWin.focus();
	}

	// Open popups for registration stuff
	function reg_popup(name)
	{
		window.focus();
		url = "chat/" + name + ".php3?L=english&Link=1";
		pop_width = (name != 'admin'? 350:510);
		pop_height = (name != 'deluser'? 470:190);
		param = "width=" + pop_width + ",height=" + pop_height + ",resizable=yes,scrollbars=yes";
		name += "_popup";
		window.open(url,name,param);
	}

	// The three functions bellow allows to ensure an unique choice among rooms
	function reset_R0()
	{
			}

	function reset_R1()
	{
		document.forms['Params'].elements['R0'].options[0].selected = true;
		document.forms['Params'].elements['T'].options[0].selected = true;
		document.forms['Params'].elements['R2'].value = '';
	}

	function reset_R2()
	{
		document.forms['Params'].elements['R0'].options[0].selected = true;
		document.forms['Params'].elements['R1'].options[0].selected = true;
	}