function QuickSearch_ValidateQuickSearch()
{
    if (document.getElementById("ctl00_QuickSearch_DropDownList_Type").value == "")
    {
        alert("Please select New or Used");
        return false;
    }
    
    if (document.getElementById("ctl00_QuickSearch_DropDownList_Make").value == "")
    {
        alert("Please select a Make");
        return false;
    }
    
    if (document.getElementById("ctl00_QuickSearch_DropDownList_Range").value == "")
    {
        alert("Please select a Model");
        return false;
    }
}

var cascadingDropDown_Range_OnPopulatedHandlerAdded = false;

function QuickSearch_AddCascadingDropDown_Range_OnPopulatedHandler() {    
    if (!cascadingDropDown_Range_OnPopulatedHandlerAdded) {
    
        var cascadingDropDown_Range = $find('Behavoir_CascadingDropDown_Range');
        cascadingDropDown_Range.add_populated(QuickSearch_CascadingDropDown_Range_OnPopulated);
        
        cascadingDropDown_Range_OnPopulatedHandlerAdded = true;        
    }    
}