function validateFormOnSubmit(){var theForm=document.getElementById("contactus");var reason="";reason+=validateEmail(theForm.email);reason+=validateEmpty(theForm.lastname);reason+=validateEmpty(theForm.firstname);if(reason!=""){alert("Some fields need correction:\n"+reason);return false;}
theForm.submit();}
function validateEmpty(fld){var error="";if(fld.value.length==0){fld.style.background='Red';error="The required field "+fld.name+" has not been filled in.\n"
fld.focus();}
else{fld.style.background='White';}
return error;}
function trim(s){return s.replace(/^\s+|\s+$/,'');}
function validateEmail(fld){var error="";var tfld=trim(fld.value);var emailFilter=/^[^@]+@[^@.]+\.[^@]*\w\w$/;var illegalChars=/[\(\)\<\>\,\;\:\\\"\[\]]/;if(fld.value==""){fld.style.background='Red';error="You didn't enter an email address.\n";fld.focus();}
else if(!emailFilter.test(tfld)){fld.style.background='Yellow';error="Please enter a valid email address.\n";fld.focus();}
else if(fld.value.match(illegalChars)){fld.style.background='Yellow';error="The email address contains illegal characters.\n";fld.focus();}
else{fld.style.background='White';}
return error;}