function cofnij_strone() {
	history.go(-1);
}


function otworz_okno_info(file,window)
{
	
    	childWindow=open(file,window,'height=323,width=690,left=100,top=20,status=0,resizable=0,menubar=0');
    	childWindow.opener = self;
		
    	childWindow.focus();
}