Source Code for Me (s-c.me)

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1. function checkRadios() {
2.         var el = document.formregions.elements;
3.         var valueofchecked =  0;
4.         for(var i =  0 ; i < el.length ; ++i) {
5.             if(el[i].type == "radio") {
6.                 var radiogroup = el[el[i].name];
7.                 var itemchecked = false;
8.                 for(var j =  0 ; j < radiogroup.length ; ++j) {
9.                     if(radiogroup[j].checked) {
10.                         itemchecked = true;
11.                         valueofchecked = radiogroup[j].value;
12.                         break;
13.                     }
14.                 }
15.                 if(!itemchecked) {
16.                     alert("Пожалуйста, выберите сначала регион.");
17.                     if(el[i].focus)
18.                         el[i].focus();
19.                     return false;
20.                 }
21.             }
22.         }
23.         return valueofchecked;
24.     }