// http://www.steelesoftconsulting.com/
var submitcount=0;
function checkSubmit() {     // don't allow double submit on form
if (submitcount == 0) {
submitcount++;
return true;
}
else {
alert('You have already submitted this form. Please wait...');
return false;
}
}
function empty(str) {        // checks if string is empty
if(str == null || str == '')
return true;
return false;
}
function checkempty(validform, formval, formfocus, alertmsg) {
if(!validform)
return false;
if(empty(formval)) {
alert('Please Enter: ' + alertmsg);
formfocus.focus();
return false;
}
return true;
}
function checkemail(validform, formval, formfocus, alertmsg) {
var pattern = /^[\w\-]+(\.[\w\-]+)*@[\w\-]+\.([\w\-]+\.)*[a-z]{2,}$/i;
if(!validform)
return false;
if(empty(formval)) {
alert('Please Enter: ' + alertmsg);
formfocus.focus();
return false;
}
if(!pattern.test(formval)) {
alert('Please Enter a Valid ' + alertmsg);
formfocus.focus();
return false;
}
return true;
}