function validate() {
 if (document.form.First_Name.value.length <1){
 alert ("please enter your first name");
 return false;
 }
 if (document.form.Last_Name.value.length <1){
 alert ("please enter your last name");
 return false;
 }
 if (document.form.Phone.value.length <1){
 alert ("please enter your phone");
 return false;
 }
 if (document.form.Email.value.length <1){
 alert ("please enter your Email");
 return false;
 } else {
 var re = new RegExp("^[a-zA-Z0-9._-]+@[a-zA-Z0-9._-]+[.][a-zA-Z0-9]+$","ig"); 
 text = document.form.Email.value;
 var found = text.search(re);
 if (found) { 
 alert ("this is not a valid Email address");
 return false;
 } 
}
 return true;
}