var scTop = 0;
var scLeft = 0;
var oldscTop;
var oldscLeft;
function scrollHeaders(block) {
	oldscTop = scTop;
	oldscLeft = scLeft;
	scTop = block.scrollTop;
	scLeft = block.scrollLeft;
	document.getElementById('tablehead').style.marginLeft = '-' + scLeft + 'px';
	document.getElementById('sidehead').style.marginTop = '-' + scTop + 'px';
	document.getElementById('statusmsg').innerHTML = '<div>Current Scroll Position : Top-' + scTop + ' Left-' + scLeft + '</div>';
	document.getElementById('statusmsg').innerHTML += '<div>Old Scroll Position : Top-' + oldscTop + ' Left-' + oldscLeft + '</div>';
}