function clearInput()
{
    document.getElementById("mapInput").value = "";
}

function mapSearch()
{
    // check address
    if(document.getElementById("mapInput").value == "Please enter your address" || document.getElementById("mapInput").value == "")
    {
        alert("Please enter your address");
    }
    else
    {
        document.getElementById("mapFrame").src = "http://maps.google.com.au/maps?f=q&source=s_q&hl=en&geocode=&q=doctor+" + urlize(document.getElementById("mapInput").value) + "+australia&output=embed";
    }
}

function urlize(str)
{
    return str.replace(/ /g,"+");
   
}