function sendForm()
{
 var contin = 1;
 var alertmessage = "";

 if (document.getElementById("lfname").value == '')
 {
  alertmessage = alertmessage + "Please enter a name\n";
  contin = 0;
 }
 if (document.getElementById("lphone").value == '')
 {
  alertmessage = alertmessage + "Please enter a phone\n";
  contin = 0;
 }
 if (document.getElementById("lemail").value.indexOf("@") == -1)
 {
  alertmessage = alertmessage + "Please enter a valid email\n";
  contin = 0;
 }
 if (contin == 1) document.getElementById("mainForm").submit();
 else alert(alertmessage);

}