function bcheck(){
	if( (navigator.appName == "Netscape") || (navigator.appName == "Microsoft Internet Explorer") ){
		if(navigator.appVersion.charAt(0)>=3){
			return true;
		}
	}
	return false;
}

if ( bcheck() ){

	mb_top			= new Image;
	mb_tune			= new Image;
	mb_impression	= new Image;
	mb_data			= new Image;


	mb_top_over			= new Image;
	mb_tune_over		= new Image;
	mb_impression_over	= new Image;
	mb_data_over		= new Image;



	mb_top.src				= "./image/mb_01_top.gif";
	mb_tune.src				= "./image/mb_02_tune.gif";
	mb_impression.src		= "./image/mb_03_impression.gif";
	mb_data.src				= "./image/mb_04_data.gif";


	mb_top_over.src			= "./image/mb_01_top_over.gif";
	mb_tune_over.src		= "./image/mb_02_tune_over.gif";
	mb_impression_over.src	= "./image/mb_03_impression_over.gif";
	mb_data_over.src		= "./image/mb_04_data_over.gif";



// -------- backbtn --------
	ImageBack = new Image();
	ImageBack.src = "./image/back.gif";

	overImageBack = new Image();
	overImageBack.src = "./image/back_over.gif";


// -------- readbtn --------
	ImageRead = new Image();
	ImageRead.src = "./image/impre_read.gif";

	overImageRead = new Image();
	overImageRead.src = "./image/impre_read_over.gif";

// -------- impression page link --------
	ImagePage1 = new Image();
	ImagePage1.src = "./image/impre_p1_link.gif";

	overImagePage1 = new Image();
	overImagePage1.src = "./image/impre_p1_over.gif";

	ImagePage2 = new Image();
	ImagePage2.src = "./image/impre_p2_link.gif";

	overImagePage2 = new Image();
	overImagePage2.src = "./image/impre_p2_over.gif";

	ImagePage3 = new Image();
	ImagePage3.src = "./image/impre_p3_link.gif";

	overImagePage3 = new Image();
	overImagePage3.src = "./image/impre_p3_over.gif";
}

function overImage(ImgName)
{
	if( bcheck() ){
		imgstr = ImgName + "_over.src";
		document[ImgName].src = eval(imgstr);
	}
}

function normalImage(ImgName)
{
	if( bcheck() ){
		imgstr = ImgName + ".src";
		document[ImgName].src = eval(imgstr);
	}
}

function openWindow(w,h,target, url)
{
	if( bcheck() ){
		str = "width=" + w + "," + "height=" + h +  ",resizable=yes";
		window.open(url, target, str);
		return false;
	}
}