var run=1;  
function mail_new_check() { 
  var ok=1;
  var rc='1px solid #ff0000',orc='1px solid #cccccc',lc='2px solid #ff0000',olc='1px solid #ced0a2';
  var rb='#FFCCCC',orb='#FFFFFF';
  if(run) {   
    var frm=document.forms['support_mail'];

    var name=frm.elements['name'];
    var name_info=document.getElementById('name_info');
    var nameRE=/[^a-zA-Zа-яА-ЯёЁ ]/;
    if(nameRE.test(name.value)){
      name.style.backgroundColor=rb;ok=0;
      name_info.innerHTML="field can contain only A-Z a-z а-я А-Я<br><b>Example:</b>James<br>";
    }else {name.style.backgroundColor=orb;  name_info.innerHTML="";}
    if(!name.value) {name.style.borderLeft=lc;ok=0;} else {name.style.borderLeft=olc;}     
    
    var subject=frm.elements['subject'];
    var subject_info=document.getElementById('subject_info');
    var subjectRE=/[^a-zA-Zа-яА-ЯёЁ0-9_.:;,()\-\!\?\n\r\'\` ]/;
    if(subjectRE.test(subject.value)){
      subject.style.backgroundColor=rb;ok=0;
      subject_info.innerHTML="field can contain only A-Z a-z а-я А-Я 0-9_.:;,()-'`!?<br><b>Example:</b>Simple TEXT!<br>";
    }else {subject.style.backgroundColor=orb; subject_info.innerHTML="";}  
    if(!subject.value) {subject.style.borderLeft=lc;ok=0;} else {subject.style.borderLeft=olc;}

    var msg=frm.elements['msg'];
    var msg_info=document.getElementById('msg_info');
    var msgRE=/[^a-zA-Zа-яА-ЯёЁ0-9_.:;,()\-\!\?\n\r\'\` ]/;
    if(msgRE.test(msg.value)){
      msg.style.backgroundColor=rb;ok=0;
      msg_info.innerHTML="field can contain only A-Z a-z а-я А-Я 0-9_.:;,()-'`!?<br><b>Example:</b>Simple TEXT!<br>";
    }else {msg.style.backgroundColor=orb; msg_info.innerHTML="";}  
    if(!msg.value) {msg.style.borderLeft=lc;ok=0;} else {msg.style.borderLeft=olc;}
     
    var email=frm.elements['email'];
    var email_info=document.getElementById('email_info');
    var emailSymbolsRE=/[^a-zA-Z0-9-_@.]/;
      if(emailSymbolsRE.test(email.value)){
        email.style.backgroundColor=rb;ok=0;
        email_info.innerHTML="field can contain only a-zA-Z0-9-@.<br><b>Example:</b>aaa@aaa.com<br>";
      }else {email.style.backgroundColor=orb; email_info.innerHTML="";} 
      var emailRE=/^[-!#$%&'*+\/0-9=?A-Z^_a-z{|}~](\.?[-!#$%&'*+\/0-9=?A-Z^_a-z{|}~])*@[a-zA-Z](-?[a-zA-Z0-9])*(\.[a-zA-Z](-?[a-zA-Z0-9])*)+$/;
      if(!emailRE.test(email.value) && !emailSymbolsRE.test(email.value) && email.value) {email.style.border=rc;ok=0;}else {email.style.border=orc;} 
    if(!email.value) {email.style.borderLeft=lc;} 
        
       
    if(ok==1) frm.send.disabled=false;else frm.send.disabled=true;
    
  }
}