// http://www.webmasterworld.com/forum91/441.htm

function showdiv(pass) {
    var divs = document.getElementsByTagName('div');
  for(i=0;i<divs.length;i++){
	  
	  if(divs[i].id.match(pass)){//if they are 'see' divs
		  if (document.getElementById) // DOM3 = IE5, NS6
		  divs[i].style.visibility="visible";
		  else
		  if (document.layers) // Netscape 4
		  document.layers[divs[i]].display = 'visible';
		  else // IE 4
		  document.all.divs[i].visibility = 'visible';
	  } else {
		  if ((document.getElementById) && (divs[i].id.match('F1')||divs[i].id.match('F2')||divs[i].id.match('F3')||divs[i].id.match('F4') ))// DOM3 = IE5, NS6
		  divs[i].style.visibility="hidden";
		  else
		  if ((document.layers) &&  (divs[i].id.match('F1')||divs[i].id.match('F2')||divs[i].id.match('F3')||divs[i].id.match('F4') ))// Netscape 4
		  document.divs[i].visibility = 'hidden';
		  else // IE 4
		  if    (divs[i].id.match('F1')||divs[i].id.match('F2')||divs[i].id.match('F3')||divs[i].id.match('F4'))
		  document.all.divs[i].visibility = 'hidden';
	  }
  }
}