<!------- hide the script from old browsers
 
// base image names (mouse rollout - not highlighted)
base_imgs = new Array ();
base_imgs['top_home'] = 'http://www.research.mdsg.umd.edu/grafix/top_home1.gif';

base_imgs['go_home'] = 'http://www.research.mdsg.umd.edu/grafix/go_home1.gif';
 
// highlight/new image names (mouse rollover)
new_imgs = new Array ();
new_imgs['top_home'] = 'http://www.research.mdsg.umd.edu/grafix/top_home2.gif';
new_imgs['go_home'] = 'http://www.research.mdsg.umd.edu/grafix/go_home2.gif';


leader = 'Return to '; // window.status lead-in

<!-- DO NOT MAKE ANY CHANGES TO THE REST OF THE SCRIPT -->

// web browser detection
//isMac = (navigator.appVersion.indexOf("Mac") != -1);
//isWin = (navigator.appVersion.indexOf("Win") != -1);
//isUnix = (!isMac && !isWin);
// mouseover check
browser_name = navigator.appName;
browser_version = parseFloat(navigator.appVersion); 
if (browser_name == "Netscape" && browser_version >= 3.0) { okMouse = true; }
else if (browser_name == "Microsoft Internet Explorer" && 
  browser_version >= 3.0) { okMouse = true; }
else if (browser_version >= 4.0) { okMouse = true; }
else { okMouse = false; }
// dHTML layer check
ns4 = (document.layers)?true:false; //netscape 4 or greater
ie4 = (document.all)?true:false;  //msie 4 or greater
okMenu = (ns4 || ie4)?true:false; 

function preload_img(image_array,flag) { // preload images
  // image file names stored in image_array (defined above)
  // called below (or can use with BODY onLoad
  if (okMenu || okMouse) {
    for (var loop in image_array) {
      var t = eval('preload_' + flag);
      t[loop] = new Image();
      t[loop].src = image_array[loop];
    }
  }
}

function msover(img,ref) { // mouse rollover function
  // img - name of the IMG statement
  // ref - new_imgs array name 
  if (!ref) { ref = img; } 
  if (okMenu || okMouse) {
    document.images[img].src = preload_on[ref].src;
    lastimg = img;  
    lastref = base_imgs[lastimg]; 
  }
}
	
function msout(img,ref) { // mouse rollout function
  // img - name of the IMG statement
  // ref - new_imgs array name 
  if (!ref) { ref = img; }
  if (okMenu || okMouse) { document.images[img].src = preload_off[ref].src;}
}

preload_off = new Array ();
preload_on = new Array ();
preload_img(base_imgs,'off'); 
preload_img(new_imgs,'on'); 

function on_msover(string,img,ref) {
  if (okMouse) {
    msover(img,ref);// highlight current selection
    window.status = leader + string;
  }
}

function on_msout(img) {
  if (okMouse) {
    msout(img);
    window.status='Maryland Sea Grant';
  }
}

function getToday(f) {

  var months = new Array("January", "February", "March", "April", "May", "June",
    "July", "August", "September", "October", "November", "December");

  var today = new Date();
  var month  = today.getMonth();
  var day = today.getDate();
  var year = today.getYear() + 1900;
  var year = today.getYear();
  if (year < 1000) { year += 1900; }
  if (f) { var msg = ""; }
  else { var msg = "Last modified "; }
  document.write(msg + months[month] + " " + day + ", " + year);
 
}

function check_pipw(which) {
  alert("NEED TO CHECK IF 5 DIGITS");
  return false;
}


//close off comment to hide this script from old browsers----------->