function yapnav_ys(action) {
	if (action =='over') {
		$("#yapnav_ys").css("background-position","0px 0px");
	}
	else {
		$("#yapnav_ys").css("background-position","0px 39px");
	}
}

function yapnav_rp(action) {
	if (action =='over') {
		$("#yapnav_rp").css("background-position","0px 0px");
	}
	else {
		$("#yapnav_rp").css("background-position","0px 39px");
	}
}

function yapnav_vrp(action) {
	if (action =='over') {
		$("#yapnav_vrp").css("background-position","0px 0px");
	}
	else {
		$("#yapnav_vrp").css("background-position","0px 39px");
	}
}

function yapnav_srp(action) {
	if (action =='over') {
		$("#yapnav_srp").css("background-position","0px 0px");
	}
	else {
		$("#yapnav_srp").css("background-position","0px 39px");
	}
}

function yapnav_dp(action) {
	if (action =='over') {
		$("#yapnav_dp").css("background-position","0px 0px");
	}
	else {
		$("#yapnav_dp").css("background-position","0px 39px");
	}
}

function yapnav_ip(action) {
	if (action =='over') {
		$("#yapnav_ip").css("background-position","0px 0px");
	}
	else {
		$("#yapnav_ip").css("background-position","0px 39px");
	}
}

function yapnav_up(action) {
	if (action =='over') {
		$("#yapnav_up").css("background-position","0px 0px");
	}
	else {
		$("#yapnav_up").css("background-position","0px 39px");
	}
}