var toppageid = document.getElementById('toppageid').value;                
switch (toppageid){                           
    
/* FVM */
    case "11224": document.write('<div id="navcontainerB1">'); break;
    case "11209": document.write('<div id="navcontainerB2">'); break;
    case "14796": document.write('<div id="navcontainerB3">'); break;
    case "14836": document.write('<div id="navcontainerB4">'); break;
    case "11239": document.write('<div id="navcontainerB5">'); break;
    case "18899": document.write('<div id="navcontainerB6">'); break;
    default: document.write('<div id="navcontainerB0">'); break;
    }