function toggleDiv(divid){
  if(document.getElementById(divid).style.display == 'none'){
    document.getElementById(divid).style.display = 'block';
    if (document.getElementById('leftblock')!=null){
    	document.getElementById('leftblock').style.marginTop = '300px';
    }
    if  (document.getElementById('rightblock')!=null){
    	document.getElementById('rightblock').style.marginTop = '300px';
    }
  }else{
    document.getElementById(divid).style.display = 'none';
    if  (document.getElementById('rightblock')!=null){
    	document.getElementById('rightblock').style.marginTop = '0px';
    }
    if (document.getElementById('leftblock')!=null){
    	document.getElementById('leftblock').style.marginTop = '0px';
    }  
  }
}