function select_first_tab () {
	if (location.hash.replace(/#/gi, '') != '') {
		select_tab(document.getElementById('tab_'+location.hash.replace(/#/gi, '')).childNodes[0]);
	} else {
		if (document.all) document.getElementById('nav_bar').childNodes[0].childNodes[0].childNodes[0].style.backgroundColor = '#DEF0FE';
		else document.getElementById('nav_bar').childNodes[1].childNodes[0].childNodes[1].style.backgroundColor = '#DEF0FE';
	}
}
function select_tab (cell_link) {
	cells = cell_link.parentNode.parentNode.childNodes;
	for (iI = 0; iI < cells.length; iI++) if (typeof  cells[iI].tagName == 'string') cells[iI].style.backgroundColor = '#FFFFFF';
	cell_link.parentNode.style.backgroundColor = '#DEF0FE';
	if (document.all) viewerOffset = 0; else viewerOffset = document.getElementById('viewer').offsetTop;
	document.getElementById('viewer').scrollTop = document.getElementById(cell_link.hash.replace(/#/gi, '')).offsetTop - viewerOffset;
	return false;
}
function init_record () {
	if (!document.all) document.getElementById('viewer').style.overflow = 'auto';
}