function picto(file) { 
	window.open(file,'_picto','menubar=no, scrollbars=no,resizable=no,top=' + (screen.height/2-300) + ',left=' + (screen.width/2-310) + ',width=610,height=560');
} 

function comm(file) { 
	window.open(file,'_comm','menubar=no, scrollbars=yes,resizable=no,top=' + (screen.height/2-300) + ',left=' + (screen.width/2-310) + ',width=610,height=560');
}