bName = navigator.appName;bVer = parseInt(navigator.appVersion);
    if ((bName == "Netscape" && bVer >= 3) ||
        (bName == "Microsoft Internet Explorer" && bVer >= 4)) br = "n3";
    else br = "n2";

    if (br== "n3") {

		Studio_Menu_01on=new Image();
		Studio_Menu_01on.src = "../image/studio/studio_m01_b.gif";
		Studio_Menu_02on=new Image();
		Studio_Menu_02on.src = "../image/studio/studio_m02_b.gif";
		Studio_Menu_03on=new Image();
		Studio_Menu_03on.src = "../image/studio/studio_m03_b.gif";
		Studio_Menu_04on=new Image();
		Studio_Menu_04on.src = "../image/studio/studio_m04_b.gif";
		Studio_Menu_05on=new Image();
		Studio_Menu_05on.src = "../image/studio/studio_m05_b.gif";

		Studio_Menu_01off=new Image();
		Studio_Menu_01off.src = "../image/studio/studio_m01_a.gif";
		Studio_Menu_02off=new Image();
		Studio_Menu_02off.src = "../image/studio/studio_m02_a.gif";
		Studio_Menu_03off=new Image();
		Studio_Menu_03off.src = "../image/studio/studio_m03_a.gif";
		Studio_Menu_04off=new Image();
		Studio_Menu_04off.src = "../image/studio/studio_m04_a.gif";
		Studio_Menu_05off=new Image();
		Studio_Menu_05off.src = "../image/studio/studio_m05_a.gif";

	}

	function imgAct(imgName) {
	   if (br == "n3") {
	   document[imgName].src = eval(imgName + "on.src");
	   }
	}

	function imgInact(imgName) {
	   if (br == "n3") {
	   document[imgName].src = eval(imgName + "off.src");
	}
}