// check email
function isEmail(fld){
	bitBlurCheckInProgress = 1
	if (fld.value.length > 0){
		var re = /^\s*\S+@\S+\.\S{2,5}\s*$/
		if (fld.value.search(re) == -1) {
			alert("This is not a valid email address.")
			fld.focus()
			fld.select()
			return false
		}
	}
	bitBlurCheckInProgress = 0
	return true
}