var detect = navigator.userAgent.toLowerCase();
var OS,browser,version,total,thestring;
if (checkIt('safari')) browser = "Safari"
else if (checkIt('msie')) browser = "Internet Explorer"
else if (!checkIt('compatible'))
{
	browser = "Netscape Navigator"
	version = detect.charAt(8);
}
else browser = "An unknown browser";

if (!version) version = detect.charAt(place + thestring.length);

if (!OS)
{
	if (checkIt('mac')) OS = "Mac"
	else if (checkIt('win')) OS = "Windows"
	else OS = "an unknown operating system";
}
function checkIt(string)
{
	place = detect.indexOf(string) + 1;
	thestring = string;
	return place;
}
function doLayout(){
	
	if(document.getElementById('maincontent_outer') != null){
		var content_top = document.getElementById('maincontent_outer').offsetTop;
		var content_bottom = document.getElementById('maincontent_outer').offsetHeight;
	}else{
		var content_top = document.getElementById('maincontent_outer_fullwidth').offsetTop;
		var content_bottom = document.getElementById('maincontent_outer_fullwidth').offsetHeight;
	}
	
	var new_height = (content_bottom - content_top) - 74;
	if(document.getElementById('left_space') != null){ new_height = new_height + 50; }
	
	//alter height for IE5 mac ??
	if(browser ==  "Internet Explorer" && version == 5){
		new_height = new_height - 40;
		document.getElementById('left_column').style.height = new_height + 'px';
		document.getElementById('leftbase').style.position = 'absolute';
		document.getElementById('leftbase').style.top = (new_height) + 'px';
		document.getElementById('leftbase').style.left = 0 + 'px';
	}else{
		document.getElementById('left_column').style.height = new_height + 'px';
		document.getElementById('leftbase').style.position = 'absolute';
		document.getElementById('leftbase').style.bottom = -1 + 'px';
		document.getElementById('leftbase').style.left = 0 + 'px';
	}
}