<!--Hide script from ancient browsers
	
	function imageWindow(page, width, height) {
		picWindow = window.open( page, 'picWin', 'toolbar=no,location=no,scrollbars=no,width=' + width + ',height=' + height)
	}
	
	function additionalTipWindow(page) {
		tipWindow = window.open( page, 'tipWin', 'toolbar=no,location=no,scrollbars=no,width=800,height=600')
	}
	
	function showSubcategoryMenu (categoryID) {
		var categoryItem = document.getElementById('categoryItem' + categoryID);
		var subcategoryMenu = document.getElementById('subcategoryMenu' + categoryID);
		
		hideSubcategoryMenus();
		
		if (categoryItem) categoryItem.className = 'categoryItemOn';		
		if (subcategoryMenu) subcategoryMenu.className = 'subcategoryMenuOn';
	}
	
	function showSubsetMenu (subcategoryID) {
		var subsetMenu = document.getElementById('subsetMenu' + subcategoryID);
		
		hideSubsetMenus();
		
		if (subsetMenu) subsetMenu.className = 'subsetMenuOn';
	}
	
	function hideSubcategoryMenus () {
	//hides all subcategory and subset menus
		var menus = getElementsByClass('categoryItemOn');
		
		for (i = 0; i < menus.length; i++) {
			menus[i].className = 'categoryItem';
		}
		
		var menus = getElementsByClass('subcategoryMenuOn');
		
		for (i = 0; i < menus.length; i++) {
			menus[i].className = 'subcategoryMenu';
		}
	}
	
	function hideSubsetMenus () {
		var menus = getElementsByClass('subsetMenuOn');
		
		for (i = 0; i < menus.length; i++) {
			menus[i].className = 'subsetMenu';
		}
	}
	
	function getElementsByClass(searchClass,node,tag) {
		var classElements = new Array();
	
		if ( node == null )
			node = document;
		if ( tag == null )
			tag = '*';
	
		var els = node.getElementsByTagName(tag);
		var elsLen = els.length;
		var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
	
		for (i = 0, j = 0; i < elsLen; i++) {
			if ( pattern.test(els[i].className) ) {
				classElements[j] = els[i];
				j++;
			}
		}
	
		return classElements;
	}

	function validateNumber(e) {			
		var keyASCII = window.event ? e.keyCode : e.which;
		
		if ((keyASCII >= 48 && keyASCII <= 57) || keyASCII == 0 || keyASCII == 8) {
			return true;
		}
		else {
			return false;
		}
	}
//-->