function themax() { var a=document.getElementById("left").offsetHeight; var b=document.getElementById("center").offsetHeight; var c=document.getElementById("right").offsetHeight; var themax=Math.max(Math.max(a,b),c) document.getElementById("left").style.height=themax+"px"; document.getElementById("center").style.height=themax+"px"; document.getElementById("right").style.height=themax+"px"; } function killErrors() { return true; } window.onerror = killErrors;