top_n = new Image(); top_n.src  = "image/top_n.gif";
top_na= new Image(); top_na.src = "image/top_na.gif";
next_n = new Image(); next_n.src  = "image/next_n.gif";
next_na= new Image(); next_na.src = "image/next_na.gif";

function go1(j){
	if (j == 0){
		document.top.src = top_n.src;
	} else if (j == 1){
		document.top.src = top_na.src;
	}
}

function go2(j){
	if (j == 0){
		document.next2.src = next_n.src;
	} else if (j == 1){
		document.next2.src = next_na.src;
	}
}

function go3(j){
	if (j == 0){
		document.next3.src = next_n.src;
	} else if (j == 1){
		document.next3.src = next_na.src;
	}
}

function go4(j){
	if (j == 0){
		document.next4.src = next_n.src;
	} else if (j == 1){
		document.next4.src = next_na.src;
	}
}

function go5(j){
	if (j == 0){
		document.next5.src = next_n.src;
	} else if (j == 1){
		document.next5.src = next_na.src;
	}
}

function go6(j){
	if (j == 0){
		document.next6.src = next_n.src;
	} else if (j == 1){
		document.next6.src = next_na.src;
	}
}	

function go7(j){
	if (j == 0){
		document.next7.src = next_n.src;
	} else if (j == 1){
		document.next7.src = next_na.src;
	}
}

function go8(j){
	if (j == 0){
		document.next8.src = next_n.src;
	} else if (j == 1){
		document.next8.src = next_na.src;
	}
}

function go9(j){
	if (j == 0){
		document.next9.src = next_n.src;
	} else if (j == 1){
		document.next9.src = next_na.src;
	}
}

function go10(j){
	if (j == 0){
		document.next10.src = next_n.src;
	} else if (j == 1){
		document.next10.src = next_na.src;
	}
}

function go11(j){
	if (j == 0){
		document.next11.src = next_n.src;
	} else if (j == 1){
		document.next11.src = next_na.src;
	}
}