var elnum;
function checkGB()
{
    for (var i = 0; i < document.form1.elements['q7_text[]'].length; i++) {

        //if (document.forms1.elements['q7_text[]'][i]].value !== "" && !document.forms1.elements['q7_text[]'][i]].value.match(/^\d+$/) )
        if (document.form1.elements['q7_text[]'][i].value != "")
        {
            if(!document.form1.elements['q7_text[]'][i].value.match(/^\d+$/)) {
            elnum = i +1;
            alert("Choice " + elnum  + " in question 7  contains a letter, please restrict your input to numerical values");
            return false;
            }
        }
    }


return true;
}