function LTrim(str){str=str.replace(/^\s*(.*)/,"$1");return str;}
function RTrim(str){str=str.replace(/(.*?)\s*$/,"$1");return str;}
function Trim(str){return RTrim(LTrim(str));}
function check_email(email){email=Trim(email);var ok="1234567890qwertyuiop[]asdfghjklzxcvbnm.@-_QWERTYUIOPASDFGHJKLZXCVBNM";for(var i=0;i<email.length;i++){if(ok.indexOf(email.charAt(i))<0){return false;}}
if(document.images){var re=/(@.*@)|(\.\.)|(^\.)|(^@)|(@$)|(\.$)|(@\.)/;var re_two=/^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;if(!(!email.match(re)&&email.match(re_two))){return false;}}
return true;}
function check_email_multi(emails,sep){var r=true;var emails_tab=emails.split(sep);for(var i=0;i<emails_tab.length;i++){r=r&&check_email(emails_tab[i]);}
return r;}