function switchdisplay(element_off,element_on)

{
  document.getElementById(element_on).style.display ='';
  document.getElementById(element_off).style.display ='none';
}

function clearText(thefield)

{
if (thefield.defaultValue==thefield.value)
thefield.value = ""
}

function CheckAll( Screen, field_base, checked)
{
	var i;
	var box;
	for ( i = 1; ( box = document.forms[ Screen ].elements[ field_base +
		"[" + i.toString() + "]" ] ) != null; i++ )
	{
		if ( !box.disabled )
		{
			box.checked = checked;
		}
	}
}
function Check( Screen, field_base, checked, field)
{
	var box;
	if ( ( box = document.forms[ Screen ].elements[ field_base +
		"[" + field.toString() + "]" ] ) != null && !box.disabled) box.checked = checked;
}

function OpenWindow(theURL,winName,features) { 
  window.open(theURL,winName,features);
}