var W3CDOM = ( document.createElement && document.getElementsByTagName );

window.onload = tiroir_install;

function tiroir_install() {
  if( !W3CDOM ) { return; }    
  var e;
  e = document.getElementById('tiroir');
  e.onmouseover = tiroirShow;
  e.onmouseout  = tiroirHide;
	return true;
}

function tiroirShow() {
	var p = document.getElementById( 'tiroirContent' );
	p.style.visibility = 'visible';
	p.style.display    = 'block';

	p = document.getElementById( 'tiroir' );
	p.style.height   = 212 +'px';
	p.style.bottom   = 0;
}
function tiroirHide() {
	var p = document.getElementById( 'tiroirContent' );
	p.style.visibility = 'hidden';
	p.style.display    = 'none';

	p = document.getElementById( 'tiroir' );
	p.style.height = 24 +'px';
	p.style.bottom = 0;
}