// menu
function category_1(onMouse){
	var id = document.getElementById('category_1');
	var menu = document.getElementById('topmenu1');
	if( onMouse == 'on' ){
		id.style.display = "block";
		menu.setAttribute("src", menu.getAttribute("src").replace("_off.", "_on."));

	} else {
		id.style.display = "none";
		menu.setAttribute("src", menu.getAttribute("src").replace("_on.", "_off."));
	}
}

function category_2(onMouse){
	var id = document.getElementById('category_2');
	var menu = document.getElementById('topmenu2');
	if( onMouse == 'on' ){
		id.style.display = "block";
		menu.setAttribute("src", menu.getAttribute("src").replace("_off.", "_on."));

	} else {
		id.style.display = "none";
		menu.setAttribute("src", menu.getAttribute("src").replace("_on.", "_off."));
	}
}

function category_3(onMouse){
	var id = document.getElementById('category_3');
	var menu = document.getElementById('topmenu3');
	if( onMouse == 'on' ){
		id.style.display = "block";
		menu.setAttribute("src", menu.getAttribute("src").replace("_off.", "_on."));

	} else {
		id.style.display = "none";
		menu.setAttribute("src", menu.getAttribute("src").replace("_on.", "_off."));
	}
}

function category_4(onMouse){
	var id = document.getElementById('category_4');
	var menu = document.getElementById('topmenu4');
	if( onMouse == 'on' ){
		id.style.display = "block";
		menu.setAttribute("src", menu.getAttribute("src").replace("_off.", "_on."));

	} else {
		id.style.display = "none";
		menu.setAttribute("src", menu.getAttribute("src").replace("_on.", "_off."));
	}
}

function category_5(onMouse){
	var id = document.getElementById('category_5');
	var menu = document.getElementById('topmenu5');
	if( onMouse == 'on' ){
		id.style.display = "block";
		menu.setAttribute("src", menu.getAttribute("src").replace("_off.", "_on."));

	} else {
		id.style.display = "none";
		menu.setAttribute("src", menu.getAttribute("src").replace("_on.", "_off."));
	}
}

function category_6(onMouse){
	var id = document.getElementById('category_6');
	var menu = document.getElementById('topmenu6');
	if( onMouse == 'on' ){
		id.style.display = "block";
		menu.setAttribute("src", menu.getAttribute("src").replace("_off.", "_on."));

	} else {
		id.style.display = "none";
		menu.setAttribute("src", menu.getAttribute("src").replace("_on.", "_off."));
	}
}