function setSelectedTab (id, num_tabs){
	for (i=1; i<=num_tabs; i++) {
		if (id == i)
		{
			document.getElementById("tab"+i).className = 'servicesBoxTabSelected';
			document.getElementById("content"+i).style.display = 'block';
		}
		else
		{
			document.getElementById("tab"+i).className = 'servicesBoxTab';
			document.getElementById("content"+i).style.display = 'none';
		}
	}
}