function showhide( targetId ){
  if (document.getElementById){
  		target = document.getElementById( targetId );
  			if ((target.style.display == "none")||(target.style.display == "")){
  				target.style.display = "inline";
  			} else {
  				target.style.display = "none";
  			}
  	}
}
function login(){
  if (document.getElementById){
  		target = document.getElementById('login');
  			if ((target.style.display == "none")||(target.style.display == "")){
  				target.style.display = "block";
				document.getElementById('user').focus();
  			} else {
  				target.style.display = "none";
  			}
  	}
}
function tab(show,hide){
  if (document.getElementById){
  		targetshow = document.getElementById(show);
  			if ((targetshow.style.display == "none")||(targetshow.style.display == "")){
  				targetshow.style.display = "inline";
  			}
		targethide = document.getElementById(hide);
  			if ((targethide.style.display == "inline")||(targethide.style.display == "")){
  				targethide.style.display = "none";
  			}
  	}
}