function validateForm(index) {

    var valid_form = true;
    
    //from previous code
    document.getElementById('dl_leadForm'+index).dl_qs.value = window.location.search;
    document.getElementById('dl_leadForm'+index).dl_r.value = document.referrer;
    
    
    //Clean error messages
    $('#dl_leadForm_errorloc'+index).html("");
    //Validate First Name
    if($("#dl_leadForm"+index+" input[name=dl_lead.firstname_campaignresponse.firstname_]").val() == "") {
        $('#dl_leadForm_errorloc'+index).append("-Please enter your First Name<br/>");
        valid_form = false;
    }
    //Validate Last Name
    if($("#dl_leadForm"+index+" input[name=dl_lead.lastname_campaignresponse.lastname_]").val() == "") {
        $('#dl_leadForm_errorloc'+index).append("-Please enter your Last Name<br/>");
        valid_form = false;
    }
    //Validate Job Title
    if($("#dl_leadForm"+index+" input[name=dl_lead.jobtitle_]").val() == "") {
        $('#dl_leadForm_errorloc'+index).append("-Please enter your Job Title<br/>");
        valid_form = false;
    }
    //Validate Hospital
    if($("#dl_leadForm"+index+" input[name=dl_lead.companyname_campaignresponse.companyname_]").val() == "") {
        $('#dl_leadForm_errorloc'+index).append("-Please enter your Hospital<br/>");
        valid_form = false;
    }
    //Validate State
    if($("#dl_leadForm"+index+" input[name=dl_lead.address1_stateorprovince_]").val() == "") {
        $('#dl_leadForm_errorloc'+index).append("-Please enter your State<br/>");
        valid_form = false;
    }
    var email = $("#dl_leadForm"+index+" input[name=dl_lead.emailaddress1_campaignresponse.emailaddress_]").val();
    //Validate Email
    if(email == "" ||
		email.indexOf('@') < 0 &&
		email.indexOf('.') < 0 ) {
        $('#dl_leadForm_errorloc'+index).append('-Please enter a valid Email');
        valid_form = false;
    }

    //alert(valid_form);

    if(valid_form) {
        $('#dl_leadForm'+index).submit();
    }

}