function showMidPage(id) {
  var p=document.getElementById('contents').getElementsByTagName('span')
  for (var i=0;i<p.length;i++){
	if (p[i].id != id){ p[i].style.display='none'; }
  }
	var menu = document.getElementById(id);
	menu.style.display='block';
}

function valFrm(){
//	if(document.all("username").value == ""){ alert("Please enter your username");
//		return false;
	}