function addOnloadEvent(fnc){
  if ( typeof window.addEventListener != "undefined" )
    window.addEventListener( "load", fnc, false );
  else if ( typeof window.attachEvent != "undefined" ) {
    window.attachEvent( "onload", fnc );
  }
  else {
    if ( window.onload != null ) {
      var oldOnload = window.onload;
      window.onload = function ( e ) {
        oldOnload( e );
        window[fnc]();
      };
    }
    else
      window.onload = fnc;
  }
}

function CloseLoginBox() {
    $("#popup").fadeOut("fast",function(){
        $("#popup_background").fadeOut("slow",function(){
            document.getElementById("popup_background").style.display = "none";
            })
        });
}

function CloseNewUserBox() {
    $("#popup_reg").fadeOut("fast",function(){
        $("#popup_background").fadeOut("slow",function(){
            document.getElementById("popup_background").style.display = "none";
            })
        });
}

function OpenLoginBox() {
  $("#popup_background").css("opacity","0.8");
  $("#popup_background").fadeIn("slow",function(){ $("#popup").fadeIn("fast") });
}

function OpenNewUserBox() {
  $("#popup_background").css("opacity","0.8");
  $("#popup_background").fadeIn("slow",function(){ $("#popup_reg").fadeIn("fast") });
}

function FromLoginBox() {
  $("#popup").fadeOut("fast",function(){ $("#popup_reg").fadeIn("fast") });
}

function FromNewUserBox() {
  $("#popup_reg").fadeOut("fast",function(){ $("#popup").fadeIn("fast") });
}