// US JGOFS load images support
// 040304.clc. separate JS 

// originally modified from WHOI Comm Group

// image handling scripts

function getAppVersion() {
        appname= navigator.appName;
        appversion = navigator.appVersion;
        majorver = appversion.substring(0, 1);
        if ((appname == "Netscape") && ( majorver >= 3 )) return 1;
        if ((appname == "Microsoft Internet Explorer") && (majorver >= 4)) return 1;
        return 0;
}

function swtch(num, imgname) {
        if (getAppVersion()) {
        document[imgname].src = img[num].src;
        }
}

imgsrc = new Array();
imgsrc[0] = "/images/buttons_0.gif";
imgsrc[1] = "/images/buttons_generalinfo.gif";
imgsrc[2] = "/images/buttons_whatsnew.gif";
imgsrc[3] = "/images/buttons_research.gif";
imgsrc[4] = "/images/buttons_pub.gif";
imgsrc[5] = "/images/buttons_data.gif";
imgsrc[8] = "/images/nav_bullet.gif";
imgsrc[9] = "/images/nav_bullet_x.gif";
imgsrc[10] = "/images/blankpopup.gif";

if (getAppVersion()) {
        img = new Array();
        for (i = 0; i < imgsrc.length; i++) {
                img[i] = new Image();
                img[i].src = imgsrc[i];
        }
}

function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

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

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

function MM_findObj(n, d) { //v4.0
  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=MM_findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}

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