function isEmpty(s) {
	l=s.length;
	if(!l)return true;
	for(i=0;i<l;i++) {c=s.charAt(i);if(c!=" "&&c!="\r"&&c!="\n"&&c!="\t") return false;}
	return true;
}

function okno(str,x,y)
{

  if(y < (screen.availHeight - 20) )str3="scrollbars=no,status=no,resizable=yes,width="+x+",height="+y+",left="+(screen.availWidth-x)/2+",top="+(screen.availHeight-y)/2;
  else str3="scrollbars= yes,width="+ (x + 20) +",height="+ (screen.availHeight - 50)  +",left="+(screen.availWidth-x)/2+",top= 10";

  newWindow = window.open("","newWindow",str3);
  newWindow.document.open();
  newWindow.document.write('<html><title></title> <body leftmargin="0" topmargin="0" marginheight="0" marginwidth="0"  onBlur="self.close()" onClick="self.close()">');  
  newWindow.document.write('<table width="100%" border="0" cellspacing="0" cellpadding="0" align="center" height="100%"><tr><td>');
  newWindow.document.write('<img src="'+str+'" width="'+x+'" height="'+y+'" alt="ÇÀÊÐÛÒÜ" >'); 
  newWindow.document.write('</td></tr></table></body></html>');
  newWindow.document.close();
  newWindow.focus();

}    


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) { //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);

// standard telephone number only!
function fmtPhone(o) {
	var s, orig=o.value;
	s=orig.replace(/[^0-9+()]*/g,'');
	if(s!=orig) {
		o.value=s;
		alert('Please use only "+", "(", ")" and numbers');
	}
}
