//Script to validate which key has been pressed, If enter, fire the Log In button click event.
function validateKeyPress(e, elId) {
    var key;
    var keychar;
    if (window.event) {
        // for IE, e.keyCode or window.event.keyCode can be used
        key = e.keyCode;
    }
    else if (e.which) {
        // netscape and firefox
        key = e.which;
    }
    else {
        // no event, so pass through
        return true;
    }
    if (key == 13) //Press Enter key
    {
        if (window.event) {
            // for IE cancel the event
            event.returnValue = false;
            event.cancel = true;
        }
        //Execute click event of button
        var el = document.getElementById(elId);
        if (el)
            el.click();
    }
}

function txtClear(el) {
    if (el) {
        if (el.value === "Enter a postcode or address") {
            el.value = "";
            el.className = "txt";
        }
    }
}

function txtBlur(el) {
    if (el) {
        if (el.value === "") {
            el.value = "Enter a postcode or address";
            el.className = "txt txtGrey";
        }
    }
}