var toppageid = document.getElementById('toppageid').value;   
switch (toppageid){  

/* FVM */
    case "11224": document.write('<div id="navcontainerA1">'); break;
    case "11209": document.write('<div id="navcontainerA2">'); break;
    case "14796": document.write('<div id="navcontainerA3">'); break;
    case "14836": document.write('<div id="navcontainerA4">'); break;
    case "11239": document.write('<div id="navcontainerA5">'); break;
    case "18899": document.write('<div id="navcontainerA6">'); break;
    default: document.write('<div id="navcontainerA0">'); break;
    }