var load_ok = false;

function init(imgbase) {
    if (document.images) {
        img_on  = new Array();
        img_off = new Array();

        // Init
        img_on['b_syasyu']   = new Image;
        img_off['b_syasyu']  = new Image;

        img_on['b_goriyou']   = new Image;
        img_off['b_goriyou']  = new Image;

        img_on['b_kaisyaannai']   = new Image;
        img_off['b_kaisyaannai']  = new Image;

        img_on['b_osusume']   = new Image;
        img_off['b_osusume']  = new Image;

        img_on['b_kaiin']   = new Image;
        img_off['b_kaiin']  = new Image;

        img_on['b_ipan']   = new Image;
        img_off['b_ipan']  = new Image;

	// ON Images
	img_on['b_syasyu'].src   = imgbase + "b_syasyu_on.gif";
	img_on['b_goriyou'].src   = imgbase + "b_goriyou_on.gif";
	img_on['b_kaisyaannai'].src   = imgbase + "b_kaisyaannai_on.gif";
	img_on['b_osusume'].src   = imgbase + "b_osusume_on.gif";
	img_on['b_kaiin'].src   = imgbase + "b_kaiin_on.gif";
	img_on['b_ipan'].src   = imgbase + "b_ipan_on.gif";

	// OFF Images
	img_off['b_syasyu'].src  = imgbase + "b_syasyu_off.gif";
	img_off['b_goriyou'].src   = imgbase + "b_goriyou_off.gif";
	img_off['b_kaisyaannai'].src  = imgbase + "b_kaisyaannai_off.gif";
	img_off['b_osusume'].src  = imgbase + "b_osusume_off.gif";
	img_off['b_kaiin'].src  = imgbase + "b_kaiin_off.gif";
	img_off['b_ipan'].src  = imgbase + "b_ipan_off.gif";

        load_ok = true;
    }
}

function imgFocus(fid) {
    if (document.images && load_ok) {
        document.images[fid].src = img_on[fid].src;
    }
}

function imgBlur(fid) {
    if (document.images && load_ok) {
        document.images[fid].src = img_off[fid].src;
    }
}