//CHECKS ALL THE USERS DETAILSfunction formCheck() {retval = "true"alfone = ""alftwo = ""alfthree = ""			if (document.contactus.realname.value == ""){				alfone = "your name\n"				retval = "false"			}			if (document.contactus.charity.value == ""){				alftwo = "your charity\n"				retval = "false"			}			if (document.contactus.youremail.value == ""){				alfthree = "your email address\n"				retval = "false"			}						if (retval == "false"){				alert("You must let us know:\n" + alfone + alftwo + alfthree)				if (alfone != ""){				document.contactus.realname.focus()				document.contactus.realname.select()				}				else{					if (alftwo != ""){					document.contactus.charity.focus()					document.contactus.charity.select()					}					else{					if (alfthree != ""){					document.contactus.youremail.focus()					document.contactus.youremail.select()					}									}				}								return false			}}			