function searchIntro(oEvent)
{
if (oEvent.keyCode)
iAscii = oEvent.keyCode;
else if (oEvent.which)
iAscii = oEvent.which;
else
return false;

if (iAscii == 13)
{
oEvent.returnValue=false;
oEvent.cancel = true;
BuildQuery();
}

}

    function BuildQuery(){
        

        var keyword = document.getElementById("search_value").value
        if (keyword == ""){
            alert("Please enter a search term")
        }
        else{
            window.location="Search.aspx?keyword=" + keyword
        }
    
    }