Individual column searching (select inputs) Adding a label to the dropdown

seguinrs

Hi,

How can I add a label to the select inputs?
I want to make the searching W3C compliant.
I have managed to add an Id to the dropdown list, now I need to add the "Label For ".

scriptCode.AppendLine("var select = $('<select id = ddl' + column.index() + '><option value=" + (char)34 + (char)34 + "></option></select>')");

Thanks
Roger