function show(URL)
{
wt=screen.availWidth/2-485;
ht=screen.availHeight/2-360;
window.open(URL,"URL",'top='+ht+',width=970,left='+wt+',height=700,location=0,menubar=0,resizable=0,scrollbars=1,status=0,toolbar=0');
}
function show_fonts(URL)
{
wt=screen.availWidth/2-440;
ht=screen.availHeight/2-300;
window.open(URL,"URL",'top='+ht+',width=880,left='+wt+',height=600,location=0,menubar=0,resizable=0,scrollbars=1,status=0,toolbar=0');
}