function filtroff() {
	document.getElementById('down').innerHTML='<span onclick="filtron();"><a href="javascript:;">Authors Login</a></span>';
	 var n;
	 for(n = 1; n < 120; n++)
      {
       setTimeout('filtr_zaezd('+ n +')', n*3);
      }		
 }
function filtron() {
	document.getElementById('down').innerHTML='<span onclick="filtroff();"><a href="javascript:;">Authors Login</a></span>';
	document.getElementById('blok').style.display='block';
	 var n;
	 for(n = 1; n < 120; n++)
      {
       setTimeout('filtr_viezd('+ n +')', 3*n);
      }
}
function filtr_viezd(viezd){
	viezd=viezd-119;
	document.getElementById('login').style.marginTop=viezd+'px';
	}
	
function filtr_zaezd(viezd){
	document.getElementById('login').style.marginTop='-'+viezd+'px';
	if (viezd==119){document.getElementById('blok').style.display='none';}
	}

function bookmark_down() {
	document.getElementById('bookmark').innerHTML='<a href="javascript:;" onclick="bookmark_up();">bookmark me</a>';
	 var n;
	 for(n = 1; n < 21; n++)
      {
       setTimeout('bk_viezd('+ n +')', n*10);
      }		
	}
function bk_viezd(viezd){
	viezd=2*viezd-40;
	document.getElementById('book_block').style.marginTop=viezd+'px';
	}
function bookmark_up() {
	document.getElementById('bookmark').innerHTML='<a href="javascript:;" onclick="bookmark_down();">bookmark me</a>';
	 var n;
	 for(n = 1; n < 21; n++)
      {
       setTimeout('bk_zaezd('+ n +')', n*10);
      }		
	}
function bk_zaezd(viezd){
	viezd=2*viezd;
	document.getElementById('book_block').style.marginTop='-'+viezd+'px';
	}