function echeck(str) { // check for valid email addresses
	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
		return false
	}
	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		return false
	}
	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		return false
	}
	if (str.indexOf(at,(lat+1))!=-1){
		return false
	}
	if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		return false
	}

	if (str.indexOf(dot,(lat+2))==-1){
		return false
	}	
	if (str.indexOf(" ")!=-1){
		return false
	}
	return true					
}

function validateForm(form) { 
      if (form.txtName.value == "") { 
          alert("Please Fill In Your Name."); 
          form.txtName.focus( ); 
          return false; 
          }
          
	var emailID = form.txtEmail;
	if ((emailID.value == null)||(emailID.value == "")){
		alert("Please Fill In Your E-Mail Address.");
		emailID.focus();
		return false;
	}
	if (echeck(emailID.value) == false){
		emailID.focus();
		alert("The supplied Email Address is Invalid.");
		return false;
	       }	
	if (document.getElementById("txtSecurityCode").value.length != 6) {
		alert("Please Fill In The Security Code.");
		document.getElementById("txtSecurityCode").focus();
		return false;
	}

     }