anchor.diff:  			switch(alert("Temporary Ban?",,"Yes","No", "Cancel"))
   				if("Yes")
   					var/mins = input(usr,"How long (in minutes)?","Ban time",1440) as num|null
  -					if(!mins)
  +					if(mins <= 0)
  +						to_chat(usr, "<span class='danger'>[mins] is not a valid duration.</span>")
   						return
   					var/reason = input(usr,"Please State Reason.","Reason") as message|null
   					if(!reason)
  
positive.code: 		switch(alert("Temporary Ban?",,"Yes","No", "Cancel"))
  			if("Yes")
  				var/mins = input(usr,"How long (in minutes)?","Ban time",1440) as num|null
  				if(!mins)
  					return
  				var/reason = input(usr,"Please State Reason.","Reason") as message|null
  				if(!reason)
  
negative.code: 				if(minutes > GLOB.CMinutes)
  					mins = minutes - GLOB.CMinutes
  				mins = input(usr,"How long (in minutes)? (Default: 1440)","Ban time",mins ? mins : 1440) as num|null
  				if(mins <= 0)
  					to_chat(usr, "<span class='danger'>[mins] is not a valid duration.</span>")
  					return
  				minutes = GLOB.CMinutes + mins
  				duration = GetExp(minutes)
  