function isEmpty(s){if(s==null||s==""){return true;}return false;}
function isEmailAddress(e){var m=/^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;return e.match(m);}
function isPercent(x){if(/^(\d?\.\d|\d)$/.test(x.value)){if(/^\d$/.test(x.value)){x.value=x.value+".0";}}else{x.value="0.0";}}
function isInteger(x){if(!(/^\d+$/.test(x.value))){x.value=0;}}
function isCredit(x){if(!(/^\d{1,3}$/.test(x.value))){x.value=1;return;}if(x.value<1){x.value=1;return;}}