function randomJump()
{
	theURL = new Array();
	theURL[0] = "http://www.ncmac.com/nc-market/";
	theURL[1] = "https://www.ncmac.com/campaign/intro/index.html";
	theURL[2] = "http://www.ncmac.co.jp/campaign/tokutoku/";
	theURL[3] = "http://www.ncmac.co.jp/campaign/2010ncmac-festa/numbers.html";
	ImageCount = 4;
	num = Math.floor(Math.random() * ImageCount);
	document.write("<A HREF='"+theURL[num]+"'>");
	document.write("<IMG SRC='top/10"+num+".jpg' BORDER='0'></A>");}