function check_list(){
    if (document.getElementById('DropDownList_CompanyType').value == "0" || document.getElementById('DropDownList_CompanyType').value == "1"){
        document.getElementById('DropDownList_MandD').style.display="inline";
    }else{
        document.getElementById('DropDownList_MandD').style.display="none"
    }
    if (document.getElementById('DropDownList_CompanyType').value == "2"){
        document.getElementById('DropDownList_SandT').style.display="inline";
    }else{
        document.getElementById('DropDownList_SandT').style.display="none"
    }
}