var rawfig = document.getElementById("content");
var lbident = document.getElementById("leftbar");
var tlb = document.getElementById("tree");
var cbh = rawfig.clientHeight;
var lbh = cbh + 310;
var tlt = cbh - 700;

lbident.style.height = lbh + "px";


tlb.style.marginTop = tlt + "px";