function openPic(imageName,w,h,alt)
{
l=(screen.width)/2-(w/2);
t=(screen.height)/2-(h/2);
newWindow = window.open("","newWindow","width="+w+",height="+h+",left="+l+",top="+t);
newWindow.document.open();
newWindow.document.write(''+alt+". . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ."+'');
newWindow.document.write('
');
newWindow.document.write('');
newWindow.document.close();
newWindow.focus();
}