// JavaScript Document

  toc2on=new Image();
        toc2on.src="nav_img/nav-hi9.gif";
        toc2off=new Image();
        toc2off.src="nav_img/nav-lo9.gif";
        toc3on=new Image();
        toc3on.src="nav_img/nav-hi12.gif";
        toc3off=new Image();
        toc3off.src="nav_img/nav-lo12.gif";
        toc4on=new Image();
        toc4on.src="nav_img/nav-hi15.gif";
        toc4off=new Image();
        toc4off.src="nav_img/nav-lo15.gif";
        toc5on=new Image();
        toc5on.src="nav_img/nav-hi16.gif";
        toc5off=new Image();
        toc5off.src="nav_img/nav-lo16.gif";
        toc6on=new Image();
        toc6on.src="nav_img/nav-hi17.gif";
        toc6off=new Image();
        toc6off.src="nav_img/nav-lo17.gif";
        toc7on=new Image();
        toc7on.src="nav_img/nav-hi19.gif";
        toc7off=new Image();
        toc7off.src="nav_img/nav-lo19.gif";
        
	function img_act(imgName) {
        imgOn=eval(imgName + "on.src");
        document [imgName].src=imgOn;
	}
	function img_inact(imgName) {
        imgOff=eval(imgName + "off.src");
        document [imgName].src=imgOff;	
	}