//swap image
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

<!-- popup browser -->
function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}
<!-- end of popup browser -->

<!--favicon link-->
function icon(){
da_image = new Image();
da_image.src="../favicon.ICO";
}
<!--end of favicon-->

<!--faq-->
function showtext(id){
		var txt;
		txt = document.getElementById(id);
		txt.style.display = document.getElementById(id).style.display=="none" ? "" : "none";
		document.getElementById(id+'_img').src = document.getElementById(id+'_img').src=="http://www.nssys.co.jp/images/icon/icon009.gif" ? "http://www.nssys.co.jp/images/icon/icon010.gif" : "http://www.nssys.co.jp/images/icon/icon009.gif";
//		txt.parentElement.firstChild.src = txt.parentElement.firstChild.src=="http://www.nssys.net/images/icon/icon013.gif" ? "http://www.nssys.net/images/icon/icon012.gif" : "http://www.nssys.net/images/icon/icon013.gif";
}
<!--end of faq-->

<!--package nav-->
function showtext(id){
	var txt;
	txt = document.getElementById(id);
	txt.style.display = txt.style.display=="none" ? "" : "none";
}
<!--end of package nav-->


//----------------------------------------
//display banners at random
//----------------------------------------
function rndImages (num) {
	
	var packages = new Array();
	packages = [
						 		"storemanager",
								"categorycaptain",
								"visualmerchandiser",
								"visualmdgplanner",
								"visualmdanalyzer",
								"visualcustomer",
								"chartking",
								"chartrescue",
								"chartviewer",
								"zaix"					 
						 ];
	
	var rndImgs = new Array();
	
	for (var i=0; i<num; i++) {
		var rnd = Math.floor(Math.random()*packages.length);
		
		rndImgs.push (packages[rnd]);
		packages.splice(rnd, 1);

	}
	
	render (rndImgs);
}

function render (rndImgs) {
	
	for (var i=0; i<rndImgs.length; i++) {
		var link = "packages/" + rndImgs[i] + "/index.html";
		var img_src = "images/banner/" + rndImgs[i] + ".gif";
		var output = 	"<a href='" + link + "'>" + "<img src='" + img_src + "' width='170' height='56' style='margin-bottom:9px' /></a><br />"
		document.write (output);
	}
	
}