function clearText(thefield) {
  if (thefield.defaultValue==thefield.value) { thefield.value = "" }
} 
function replaceText(thefield) {
  if (thefield.value=="") { thefield.value = thefield.defaultValue }
}


function login_show(d)
{
	 document.getElementById(d).style.display='block';
}
function login_hide(d)
{
	 document.getElementById(d).style.display='none';
}