function showGateway() {
    window.open("/smsgh-gateway", "getwayWindow", "status = 1, height = 400, width = 670, resizable = 1")
}

function checkValue(frmElement, frmValue) {
    
    if (frmElement.value == frmValue)
        frmElement.value = "";
    else if (frmElement.value == "")
        frmElement.value = frmValue;

}

function checkValueForBlur(frmElement, frmValue) {

    if (frmElement.value == "")
        frmElement.value = frmValue;

}

function validateForm() {

    var txtFullName = document.forms["frmForm"]["txtFullName"];
    var txtTelephone = document.forms["frmForm"]["txtTelephone"];
    var txtEmailAddress = document.forms["frmForm"]["txtEmailAddress"];
    var ddlOptions = document.forms["frmForm"]["TakeATrialForm_ddlOptions"];
    
    var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;

    if (txtFullName.value == "" || txtFullName.value == "Full Name") {
        alert("Enter Full Name");
        return false;
    }
    else if (txtTelephone.value == "" || txtTelephone.value == "Telephone Number") {
        alert("Enter Telephone Number");
        return false;
    }
    else if (txtEmailAddress.value == "" || txtEmailAddress.value == "Email Address") {
        alert("Enter Email Address");
        return false;
    }
    else if (!filter.test(txtEmailAddress.value)) {
        alert('Please provide a valid email address');
        txtEmailAddress.focus;
        return false;
    }
    else if (ddlOptions.selectedIndex == 0) {
        alert("Choose a product / feature");
        return false;
    }

    return true;

}