var ObjPopupId = '';

function goTo(Url){ document.location.href=Url; }
function obj(Id) { if(Id!='' && document.getElementById(Id)) return document.getElementById(Id); else return false; }
function objStyle(Id) { if(Id!='' && document.getElementById(Id)) return document.getElementById(Id).style; else return false; }
function objHide(Id) { if(Id!='' && document.getElementById(Id)) document.getElementById(Id).style.display='none'; }
function objShow(Id) { if(Id!='' && document.getElementById(Id)) document.getElementById(Id).style.display='block'; }
function isObj(Id) { if(Id!='' && document.getElementById(Id)) return true; else return false; }
function bgChange(Id, ImgSrc) { objStyle(Id).backgroundImage = "url("+ImgSrc+")"; }
function objPopup(Id){
  if( ObjPopupId!=ObjPopupId ) objHide(ObjPopupId);
  if( objStyle(Id).display=='block' ) objStyle(Id).display='none';
  else  objStyle(Id).display='block';
  ObjPopupId = Id;
}

/************************/

window.addEvent('domready', function(){
  if( isObj('top_margin') ){
    var L = $('container').getPosition().x;
    $('top_margin').setStyles({ 'width':L });
  }
});