num = 0;
jumpURL = new Array();
imgURL  = new Array();

jumpURL[0] = "feature_01.html";
jumpURL[1] = "feature_02.html";
jumpURL[2] = "feature_03_04.html";
jumpURL[3] = "index.html";


imgURL[0]  = "img/banner/banner01.jpg";
imgURL[1]  = "img/banner/banner02.jpg";
imgURL[2]  = "img/banner/banner03.jpg";
imgURL[3]  = "img/banner/banner04.jpg";



function changeImg()
{
	num++;
	num %= 4;
	document.banner.src = imgURL[num];
	setTimeout("changeImg()",5000);
}
function jump()
{
	location.href = jumpURL[num];
}
function swImg(iName,str)
{
	document.images[iName].src = str;
}