The first code segment builds the table header:
this.buildHeadr = function(){
var bdyDiv, tblDiv, tblObj, tblBdy, tblRow, tblCol,
tblCel,tblTxt;
bdyDiv = document.getElementById(this.parentdiv);
tblDiv = this.registerDiv("vmGridHdr");
tblDiv.className="vmGridDivHdr"...