function uncheckAll()
{
	if (document.forms['quicksearch-box'].all_libraries.checked)
	{
		document.forms['quicksearch-box'].public_libraries.checked=false;
		document.forms['quicksearch-box'].tepuna.checked=false;
		document.forms['quicksearch-box'].charter_libraries.checked=false;
		document.forms['quicksearch-box'].ibsml.checked=false;
	}
}
function uncheckAllCategories()
{
	document.forms['quicksearch-box'].all_libraries.checked = false;
}