validate form with javascript

I need only to put a existent code to validate form, a option to validate code to radio button too. The code is the known MM_validateForm from Dreamweavers behaviors. I don´t know why this code is not ready to radio button too. I have the join the two codes: if ([login to view URL]){ radioGroup = [login to view URL]["formulario"].elements["cidadeevento"]; validRadio = false; for (i = 0; i < [login to view URL]; i++) { validRadio = (validRadio || radioGroup[i].checked); } if (!validRadio) {alert("Você deve selecionar um dos dias do evento");} and function MM_validateForm() { //v4.0 var i,p,q,nm,test,num,min,max,errors='',args=[login to view URL]; for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=[login to view URL](args[i]); if (val) { nm=[login to view URL]; if ((val=[login to view URL])!="") { if ([login to view URL]('isEmail')!=-1) { p=[login to view URL]('@'); if (p<1 || p==(val.length-1)) errors+='- '+nm+' deve conter um endereço de email.\n'; } else if (test!='R') { num = parseFloat(val); if (isNaN(val)) errors+='- '+nm+' must contain a number.\n'; if ([login to view URL]('inRange') != -1) { p=[login to view URL](':'); min=[login to view URL](8,p); max=[login to view URL](p+1); if (num<min || max<num) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n'; } } } else if ([login to view URL](0) == 'R') errors += '- '+nm+' é requerido.\n'; } } if (errors ) alert('Os seguintes erros ocorreram:\n'+errors); document.MM_returnValue = (errors == ''); } } And the asnwer to the errors joined too. And obvious, the form only send if all are complete.