/*
Options should be passed as a single string and can include any of the following:
resizable,
toolbar,
location,
scrollbars,
menubar,
width, 
height,
top,
left,

For example:
popup(this.href, 'membership', 'height=600,width=900,scrollbars=yes')
*/

function popup(mylink, windowname, options)
{
if (! window.focus)return true;
var href;

if (typeof(mylink) == 'string')
{
   href=mylink;
}
else
{
   href=mylink.href;
}
window.open(href, windowname, options);
return false;
}