function checkflds(){
 len = document.form.email.value.length
 var i=1
 var count=0
 
 if(document.form.Signature.value.length==0)
 { window.alert("Please enter your name.");
  document.form.Signature.focus();
  return false;
 }
 
 if(document.form.email.value.length == 0)
 { window.alert("Please supply an Email address.");
  document.form.email.select();
  document.form.email.focus();
  return false;
 }
 while (i<= len){
  if((document.form.email.value.substring(i-1,i) == "@")){
   count = count + 1
  }
  if((document.form.email.value.substring(i-1,i) == " ")){
   count = 2
  }
  i = i + 1;
 }
 
 if(count != 1)
 { window.alert("Please enter a valid email address!")
  document.form.email.select();
  document.form.email.focus();
  return false;
 }
 
}