function useCheckbox( hidden_id, orig_value ) {
var hidden_el = document.getElementById ( hidden_id );
if ( hidden_el.value == orig_value ) hidden_el.value = 0;
else hidden_el.value = orig_value;
}
function ShowHide(What)
{
nav=document.getElementById(What).style
if(nav.display=="none")
{ nav.display='';}
else
{ nav.display='none'; }
}
var popup;
function openIMG(URL,WNAME,w,h)
{
if (popup != null && !popup.closed) popup.close();
sw = screen.width-100;
sh = screen.availHeight-100;
if (w > sw || h > sh)
{
if (w > sw) {w1 = sw;} else {w1 = w+17;}
if (h > sh) {h1 = sh;} else {h1 = h+17;}
mtw1 = (screen.width-w1)/2;
mth1 = (screen.availHeight-h1)/2;
popup = window.open('',WNAME,"width="+w1+",height="+h1+",top="+mth1+",left="+mtw1+",status=no,toolbar=no,scrollbars=yes,resizable=no,menubar=no");
popup.focus();
}
else
{
mtw = (screen.width-w)/2;
mth = (screen.availHeight-h)/2;
popup = window.open('',WNAME,"width="+w+",height="+h+",top="+mth+",left="+mtw+",status=no,toolbar=no,scrollbars=no,resizable=no,menubar=no");
popup.focus();
}
popup.document.writeln(''+WNAME+'
');
}