function showDiv( id ) { 
    document.all.divemailme.style.visibility = 'hidden'; 
    document.all.divcallme.style.visibility = 'hidden'; 
    document.all.divmailittome.style.visibility = 'hidden'; 
    document.all.divemailme.value = ''; 
    document.all.divcallme.value = ''; 
    document.all.divmailittome.value = ''; 
    document.all[ id ].style.visibility = 'visible'; 
    document.all[ id ].focus(); 
}