var run=1; 
var ok=1; 
function login_toPay_check() {
  var rc='1px solid #ff0000',orc='1px dashed #a5ab2f';
  var rb='#C40000',orb='#000000';

  if(undefined===window.document.getElementById('email_toPay')) {clearInterval(toPay_interval); return;}
  
  if(run) { 
    ok=1;   
     
    var email=window.document.getElementById('email_toPay');
    if(email.value != 'E-mail')
    {
    var emailSymbolsRE=/[^a-zA-Z0-9-_@.]/;
      if(emailSymbolsRE.test(email.value)){email.style.backgroundColor=rb;ok=0;}else {email.style.backgroundColor=orb;} 
      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;} 
    } else ok=0;
    
    var password=window.document.getElementById('pass_toPay'); 
    var passwordSymbolsRE=/[^a-zA-Z0-9]/;
    if(passwordSymbolsRE.test(password.value)){password.style.backgroundColor=rb;ok=0;}else {password.style.backgroundColor=orb;}
    var passwordRE=/[a-zA-Z0-9]{6,}/;
    if(!passwordRE.test(password.value) && !passwordSymbolsRE.test(password.value) && password.value){password.style.border=rc;ok=0;}else {password.style.border=orc;} 

    if(!email.value||!password.value)  ok=0; 
    if(ok == 0) window.document.getElementById('sbm_toPay').disabled = true;
    else window.document.getElementById('sbm_toPay').disabled = false; 

  }
}