The code looks for a select element with the ID "mySelectList" and extracts its options. It then iterates through the options, looking for ones that are selected. If one is found, the value of that option is returned.
function() {
var selectId = document.getElementById("mySelectList");
try {
var options = selectId.options;
for (var i = 0;i < options.length;i++){
if(options[i].selected) {
return options[i].value;
}
}
} catch(e) {}
return "";
}