javascript for dropdownlist inside gridview

Question

validate dropdownlist inside grid view using javascript  I use thes but it cannaot validate

 

function GridViewGL_newCompaniesValidation() {

try {

var grd = document.getElementById('<%=GdviewnewGL_Companies.ClientID%>');

// var ErrorMsg = "";

var Fieldvalue = true;

var objfocus = "";

if (grd != null) {

if (grd.rows.length != null) {

for (var i = 1; i < grd.rows.length; i++) {

var incr = i + 1;

if (incr <= 9) {

incr = '0' + incr;

}

var CompanyName = $("#" + grd.id + "_ctl" + incr + "_txtCompanyName");

var ddlIntranetSiteURL = $("#" + grd.id + "_ctl" + incr + "_ddlIntranetSiteURL").value;

var ddlAdministrator = $("#" + grd.id + "_ctl" + incr + "_ddlAdministrator").value;

if (CompanyName.val() == '') {

if (Fieldvalue == true) {

objfocus = CompanyName;

CompanyName.css({ "border": "1px solid #E80001" });

Fieldvalue = false;

ErrorMsg(Fieldvalue);

}

}

if (ddlIntranetSiteURL == "---Select---") {

if (Fieldvalue == true) {

objfocus = ddlIntranetSiteURL;

ddlIntranetSiteURL.css({ "border": "1px solid #E80001" });

Fieldvalue = false;

ErrorMsg(Fieldvalue);

}

}

if (ddlAdministrator == "---Select---") {

if (Fieldvalue == true) {

objfocus = ddlAdministrator;

ddlAdministrator.css({ "border": "1px solid #E80001" });

Fieldvalue = false;

ErrorMsg(Fieldvalue);

}

}

}

return Fieldvalue;

// alert(Fieldvalue);

}

}

} catch (e) {

alert(e.message);

}

}