function getAppVersion() 
{  
        appname= navigator.appName;
        appversion = navigator.appVersion; 
        majorver = appversion.substring(0, 1);
        if ( (appname == "Netscape" || appname == "Microsoft Internet Explorer") 
        && ( majorver >= 3 ))  return 1; 
        if ( (appname == "Microsoft Internet Explorer") && (majorver >= 4) ) return 1;
        return 0;
}
if (getAppVersion())
{
             img1out = new Image();
             img1out.src = "images/arrow.gif";
             img2out = new Image();
             img2out.src = "images/arrow.gif";
             img3out = new Image();
             img3out.src = "images/arrow.gif";
	     img4out = new Image();
	     img4out.src = "images/arrow.gif";
	     img5out = new Image();
	     img5out.src = "images/arrow.gif";
	     img6out = new Image();
	     img6out.src = "images/arrow.gif";
	     img7out = new Image();
	     img7out.src = "images/arrow.gif";
	     img8out = new Image();
	     img8out.src = "images/arrow.gif";
	     img9out = new Image();
	     img9out.src = "images/arrow.gif";
  	     img10out = new Image();
	     img10out.src = "images/arrow.gif";
	     img11out = new Image();
	     img11out.src = "images/arrow.gif";

             img1over = new Image();
             img1over.src = "images/arrow1.gif";
             img2over = new Image();
             img2over.src = "images/arrow1.gif";
             img3over = new Image();
             img3over.src = "images/arrow1.gif";
	     img4over = new Image();
	     img4over.src = "images/arrow1.gif";
	     img5over = new Image();
	     img5over.src = "images/arrow1.gif";
	     img6over = new Image();
	     img6over.src = "images/arrow1.gif";
	     img7over = new Image();
	     img7over.src = "images/arrow1.gif";
	     img8over = new Image();
	     img8over.src = "images/arrow1.gif";
	     img9over = new Image();
	     img9over.src = "images/arrow1.gif";
	     img10over = new Image();
	     img10over.src = "images/arrow1.gif";
	     img11over = new Image();
	     img11over.src = "images/arrow1.gif";
}

function img_over(imgName){
             Overimg = eval(imgName + "over.src");
             document [imgName].src = Overimg;
}

function img_out(imgName){
             Outimg = eval(imgName + "out.src");
             document [imgName].src = Outimg;
}