function checkBrowser()
{
	var browser=navigator.appName;
	var b_version=navigator.appVersion;
	var version=parseFloat(b_version);
	var retVal = "";
	if (browser=="Microsoft Internet Explorer" && version<=6)
  	{ retVal = "IE6";}
	return retVal;
}

function getElementbyClass(rootobj, classname){
	var temparray=new Array();
	var inc=0;
	var rootlength=rootobj.length;
	for (i=0; i<rootlength; i++){
		if (rootobj[i].className==classname)
		temparray[inc++]=rootobj[i];
	}
	return temparray;
}


function getHeight(divObj){
	var iHeight = Math.max(divObj.scrollHeight,divObj.offsetHeight); 
	return iHeight;
}

if (checkBrowser() == "IE6") 
{ 
    var minHeight = 600;
    if (document.getElementById("ltcol")){
    	var divLeft = document.getElementById("ltcol");
    	if (getHeight(divLeft) > minHeight) minHeight = getHeight(divLeft);
    }
    if (document.getElementById("rtcol")){
    	var divRight = document.getElementById("rtcol");
    	if (getHeight(divRight) > minHeight) minHeight = getHeight(divRight);
    }    
    if (document.getElementById("ctcol")){
    	var divCenter = document.getElementById("ctcol");
    	if (getHeight(divCenter) > minHeight) minHeight = getHeight(divCenter);
    	divCenter.style.height = minHeight + "px";
    }
}