function getwindowsize(reporttype){
	
	var viewportwidth;
	var viewportheight;
	
	// the more standards compliant browsers (mozilla/netscape/opera/IE7) use window.innerWidth and window.innerHeight
	if (typeof window.innerWidth != 'undefined'){
		viewportwidth = window.innerWidth,
		viewportheight = window.innerHeight
	}
	
	// IE6 in standards compliant mode (i.e. with a valid doctype as the first line in the document)
	else if (typeof document.documentElement != 'undefined' && typeof document.documentElement.clientWidth != 'undefined' && document.documentElement.clientWidth != 0){
		viewportwidth = document.documentElement.clientWidth,
		viewportheight = document.documentElement.clientHeight
	}

	// older versions of IE
	else {
		viewportwidth = document.getElementsByTagName('body')[0].clientWidth,
		viewportheight = document.getElementsByTagName('body')[0].clientHeight
	}
	switch (reporttype){
		case "height": 	return viewportheight; 	break;
		case "width":	return viewportwidth;	break;
	}
}

function dovertcenter() {
	
	var theheight = parseInt(getwindowsize('height'));
	
	var remainingheight = theheight - 547;
	
	var paddingtop = remainingheight / 2;
	
	if (paddingtop < 0){ paddingtop = 0; }
	
	if (document.getElementById('container')){
		
		document.getElementById('container').style.paddingTop = paddingtop+'px';
		
	}
	
}