var isMinNS4 = (navigator.appName.indexOf("Netscape") >= 0 &&
              parseFloat(navigator.appVersion) >= 4 &&  parseFloat(navigator.appVersion) < 5) ? 1 : 0;
var isMinIE4 = (document.all) ? 1 : 0;
var isMinIE5 = (isMinIE4 && navigator.appVersion.indexOf("5.") >= 0) ? 1 : 0;
var NS6 = (document.getElementById&&!document.all)

function getlong(div1,div2){
	
	div1=getLayer2(div1);
	div2=getLayer2(div2);
	if(div1.offsetHeight>=div2.offsetHeight){
			div2.style.height=(div1.offsetHeight-30) + "px";
	}
	else{
		div1.style.height=(div2.offsetHeight-20) + "px";
	}
}

function getLayer2(name) {

  if (isMinNS4)
    return findLayer(name, document);
  if (isMinIE4)
    return eval('document.all.' + name);
	if (NS6)
		return document.getElementById(name);
  return null;
}