function IMGPreload()
{var appVer=parseInt(navigator.appVersion);
var isNC=(document.layers && (appVer >= 4));
var isIE=(document.all    && (appVer >= 4));
if (isNC || isIE)
{if (document.images)
{var imgName = IMGPreload.arguments[0];
var cnt;
swImg[imgName] = new Array;
for (cnt = 1; cnt < IMGPreload.arguments.length; cnt++)
{swImg[imgName][IMGPreload.arguments[cnt]] = new Image();
swImg[imgName][IMGPreload.arguments[cnt]].src = IMGPreload.arguments[cnt];

}}}}

function IMGFind(doc, imgName)
{for (var i=0; i < doc.layers.length; i++)
{var img = doc.layers[i].document.images[imgName];
if (!img) img = IMGFind(doc.layers[i], imgName);
if (img) return img;
}
return null;
}

function IMGSwap(imgName, imgSrc)
{var appVer=parseInt(navigator.appVersion);
var isNC=(document.layers && (appVer >= 4));
var isIE=(document.all    && (appVer >= 4));
if (isNC || isIE)
{if (document.images)
{
var img = document.images[imgName];
if (!img) img = IMGFind(document, imgName);
if (img) img.src = imgSrc;
}}}

var swImg; swImg=new Array;

IMGPreload('_RVR1', 'm/button/b_event001.gif', 'm/button/b_event002.gif');
IMGPreload('_RVR2', 'm/button/b_pck001.gif', 'm/button/b_pck002.gif');
IMGPreload('_RVR3', 'm/button/b_service001.gif', 'm/button/b_service002.gif');
IMGPreload('_RVR4', 'm/button/b_shops001.gif', 'm/button/b_shops002.gif');
IMGPreload('_RVR5', 'm/button/b_contactus001.gif', 'm/button/b_contactus002.gif');
IMGPreload('_RVR6', 'm/button/b_sitemap001.gif', 'm/button/b_sitemap002.gif');
IMGPreload('_RVR7', 'm/button/b_links001.gif', 'm/button/b_links002.gif');
IMGPreload('_RVR8', 'm/button/b_netstore001.gif', 'm/button/b_netstore002.gif');

IMGPreload('_RVR01', 'bu_dpesale001.gif', 'bu_dpesale002.gif');
IMGPreload('_RVR02', 'bu_dpeservice001.gif', 'bu_dpeservice002.gif');
IMGPreload('_RVR03', 'bu_dpesmc001.gif', 'bu_dpesmc002.gif');

IMGPreload('_RVRevent1', 'bu_sankaboshu001.gif', 'bu_sankaboshu002.gif');
IMGPreload('_RVRevent2', 'bu_photocon001.gif', 'bu_photocon002.gif');
IMGPreload('_RVRevent3', 'bu_yousu001.gif', 'bu_yousu002.gif');

IMGPreload('_RVRnetshop1', 'm/b_tokusen001.gif', 'm/b_tokusen002.gif');
IMGPreload('_RVRnetshop2', 'm/b_digcame001.gif', 'm/b_digcame002.gif');
IMGPreload('_RVRnetshop3', 'm/b_1gan001.gif', 'm/b_1gan002.gif');
IMGPreload('_RVRnetshop4', 'm/b_lens001.gif', 'm/b_lens002.gif');
IMGPreload('_RVRnetshop5', 'm/b_law001.gif', 'm/b_law002.gif');



function whatsopen(url)
{if (url !='')
{window.open(url,'_blank','width=750,height=600,scrollbars=yes,resizable=1,fullscreen=0');}}