function checkform (form){
if (form.submittername.value == ""){
 alert("PLEASE ENTER YOUR NAME.");
 form.submittername.focus();
 return false ;
}
if (form.submitteremail.value == ""){
 alert("PLEASE ENTER YOUR EMAIL ADDRESS.");
 form.submitteremail.focus();
 return false ;
}
if (form.title.value == ""){
 alert("PLEASE ENTER THE TITLE OF THE EVENT.");
 form.title.focus();
 return false ;
}
if (form.date.value == ""){
 alert("PLEASE ENTER THE DATE AND TIME OF THE EVENT.");
 form.date.focus();
 return false ;
}
if (form.description.value == ""){
 alert("PLEASE ENTER THE DESCRIPTION OF THE EVENT.");
 form.description.focus();
 return false ;
}
 return true ;
}