function ouvre_popup(page) {				
	width = 660;
	leftf =150;
	height = 525;
	topf = 150;
	if(navigator.appName=="Microsoft Internet Explorer"){
		var riwindow = window.open(page,"IRC Crysis France" ,'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width= '+width+',height='+height+',left='+leftf+',top='+topf);
	}else{
		if(navigator.appName=="Opera"){				
			window.open(page,"IRC Crysis France","menubar=no, status=no, scrollbars=no, menubar=no, width=660, height=520");
		}else{				
			var riwindow = window.open(page,"IRC Crysis France" ,'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,width= '+width+',height='+height+',left='+leftf+',top='+topf);
		}
		if(navigator.appName!="Opera"){		
			if (riwindow){
				riwindow.focus();
			}
		}
	}
}