function popup(mylink, windowname)
{
if (!window.focus)return true;
var href;
if (typeof(mylink) == 'string')
   href=mylink;
  else
   href=mylink.href;
window.open(href, windowname, 'width=450,height=350');
return false;
}

function popin(mylink, windowname)
{
if (!window.focus)return true;
var href;
if (typeof(mylink) == 'string')
   href=mylink;
  else
   href=mylink.href;
window.open(href, windowname, 'width=520,height=380');
return false;
}

function enquiry(mylink, windowname)
{
if (!window.focus)return true;
var href;
if (typeof(mylink) == 'string')
   href=mylink;
  else
   href=mylink.href;
window.open(href, windowname, 'width=420,height=185');
return false;
}

function yaz(mylink, windowname)
{
if (!window.focus)return true;
var href;
if (typeof(mylink) == 'string')
   href=mylink;
  else
   href=mylink.href;
window.open(href, windowname, 'width=520,height=400,scrollbars=yes');
return false;
}