var ie = navigator.appName.indexOf('M')!=-1;
var nc = navigator.appName.indexOf('N')!=-1;
var brw_v = navigator.appVersion.charAt(0);

if (ie) {
    fName = "ie5.css";
} else if(nc){
  if (brw_v >= 5) {
    fName = "nc6.css";
  } else {
    fName = "nc4.css";
  }
}

document.write("<LINK rel='stylesheet' href='" + fName + "' type='text/css'>");

function Preloading(){//Ver1.0
	var imgs = new Array('images/btn/btn-navi01_o.gif','images/btn/btn-navi02_o.gif','images/btn/btn-navi03_o.gif','images/btn/btn-navi04_o.gif','images/btn/btn-navi05_o.gif');
	PreloadImages(imgs);
}

function PreloadImages(ImgArray) {//Ver1.0
	for(loop = 0; loop < ImgArray.length; loop++){
		var img = new Image();
		img.src = ImgArray[loop];
	}
}

function swpimg(fname,trgt){//Ver1.0
	document.images[trgt].src = fname;
}