function show_item(id_item) {
	var item = document.getElementById(id_item);
	item.style.display = 'block';
}

function hide_item(id_item) {
	var item = document.getElementById(id_item);
	item.style.display = 'none';
}

function display_item(id_item) {
	var item = document.getElementById(id_item);
	if (item.style.display != 'block') {
		item.style.display = 'block';
	}
	else {
		item.style.display = 'none';
	}
}

function show_mm_item() {
	mm_cat_elem.style.display = 'block';
	mm_img_elem.src = mm_minus_src;
	mm_a_elem.className = 'plus b';
}

function hide_mm_item() {
	mm_cat_elem.style.display = 'none';
	mm_img_elem.src = mm_plus_src;
	mm_a_elem.className = 'plus';
}

function show_mm_cat(num) {
	mm_cat_elem = document.getElementById('mmcat_'+num);
	mm_img_elem = document.getElementById('mmplus_'+num);
	mm_a_elem = document.getElementById('mma_'+num);

	if (mm_cat_elem.className.indexOf('mmcat_active') == -1)	{
		if (mm_cat_elem.style.display != 'block') {
			show_mm_item();
		}
		else {
			hide_mm_item();
		}
	}
	else {
		if (mm_cat_elem.style.display != 'none') {
			hide_mm_item();
		}
		else {
			show_mm_item();
		}
	}
	window.focus();
}

function rowbg(eleId, action){
	if (action == 1) {
		document.getElementById(eleId).style.backgroundColor = '#e7e7e7';
	}
	else {
		document.getElementById(eleId).style.backgroundColor = '#f3f3f3';
	}
}