if (document.images) {

	// Set up rollover image objects for left nav menu
	
	// Home nav
	nav_1on = new Image();
	nav_1on.src = "/images/nav2.gif";
	nav_1off = new Image();
	nav_1off.src = "/images/nav1.gif";

	// nav
	nav_2on = new Image();
	nav_2on.src = "/images/nav2.gif";
	nav_2off = new Image();
	nav_2off.src = "/images/nav1.gif";

	// nav
	nav_3on = new Image();
	nav_3on.src = "/images/nav2.gif";
	nav_3off = new Image();
	nav_3off.src = "/images/nav1.gif";

	// nav
	nav_4on = new Image();
	nav_4on.src = "/images/nav2.gif";
	nav_4off = new Image();
	nav_4off.src = "/images/nav1.gif";
}

function changeImages() {

   if (document.images) {
      for (var i=0; i<changeImages.arguments.length; i+=2) {
         document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
         
         //mySrc = eval(changeImages.arguments[i+1] + ".src");
		 //alert("changeImages.arguments[i]="+mySrc)
      }
   }
}

// clickButton() function
// This function is used to make sure the "Enter" key submits the form

function clickButton(e, buttonid)
{
    var bt = document.getElementById(buttonid);    
    if (typeof bt == 'object')
    {
        if(navigator.appName.indexOf("Netscape")>(-1))
        {
            if (e.keyCode == 13)
            {
                bt.click();
                return false;
            }
        }
        if (navigator.appName.indexOf("Microsoft Internet Explorer")>(-1))
        {
            if (event.keyCode == 13)
            {
                bt.click();
                return false;
            }
        }
    } 
}