var on_img = new Array();
on_img[1] = new Image(); on_img[1].src="http://mayamaya.info/img/m-about_off.gif"
on_img[2] = new Image(); on_img[2].src="http://mayamaya.info/img/m-event_off.gif"
on_img[3] = new Image(); on_img[3].src="http://mayamaya.info/img/m-book_off.gif"
on_img[4] = new Image(); on_img[4].src="http://mayamaya.info/img/m-webcom_off.gif"

on_img[21] = new Image(); on_img[21].src="http://mayamaya.info/img/m-about_on.gif"
on_img[22] = new Image(); on_img[22].src="http://mayamaya.info/img/m-event_on.gif"
on_img[23] = new Image(); on_img[23].src="http://mayamaya.info/img/m-book_on.gif"
on_img[24] = new Image(); on_img[24].src="http://mayamaya.info/img/m-webcom_on.gif"

function M_on(nam,num){
 document.images[nam].src=on_img["2"+num].src; 
}

function M_out(nam,num){
 document.images[nam].src=on_img[num].src; 
return false;
}