// $Id: doudna.js,v 1.14 2006/07/28 18:17:31 drsteve Exp $
// somewhat lifted from Macromedia stuff --drs

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

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

// MM_findObj
function 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=findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

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

function myecho(x) { document.write(x); }

// http://istpub.berkeley.edu:4201/bcc/Winter2003/feat.spamharvest.html
function eaddr(u) {
   var u, h, t, addr, a = "&#64;", d = "berkeley.edu", l = arguments.length;
   switch(l)
   {
   case 1: // username only
      u = arguments[0]; addr = u + a + d; t = u + " at " + d; break;
   case 2: // username + domain OR username + hostname OR username + text
      u = arguments[0];
      if ( arguments[1].match(/\./) ) {       // username + domain
         d = arguments[1]; addr = u + a + d; t = u + " at " + d; 
      } else if ( arguments[1].match(/ /) ) { // username + text
         t = arguments[1]; addr = u + a + d;
      } else {                                // username + hostname
         h = arguments[1]; addr = u + a + h + "." + d; t = u + " at " + h + " dot " + d; 
      } 
      break;
   case 3: // username + domain + text OR username + hostname + domain OR username + hostname + text
      u = arguments[0];
      if ( arguments[1].match(/\./) ) {        // username + domain + text
         d = arguments[1]; t = arguments[2]; addr = u + a + d;
      } else if ( arguments[2].match(/ /) ) { // username + hostname + text
         h = arguments[1]; t = arguments[2]; addr = u + a + h + "." + d;
      } else {                                // username + hostname + domain
         h = arguments[1]; d = arguments[2]; addr = u + a + h + "." + d; t = u + " at " + h + " dot " + d; 
      } 
      break;
   case 4: // username + hostname + domain + text
      u = arguments[0]; h = arguments[1]; d = arguments[2]; t = arguments[3]; addr = u + a + h + "." + d;
      break;
   default:
      document.write("BROKEN CALL TO eaddr()"); var FAIL = "Y";
   }
   if ( ! ( FAIL == "Y" ) ) { document.write("<" + "A" + " " + "HREF=" + "mail" + "to:" + addr + ">" + t + "<\/A>"); }
}