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) { //v4.01
  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=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.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];}
}

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();
}

function openFileWin(fid){ // open windows for displaying file details
	window.open("filedetail.jsp?fid="+fid, "SK_FileWin", "width=525,height=257,status=yes");
}

function preloadImg(imgObj, imgSrc){
	eval(imgObj + '=new Image();');
	eval(imgObj + '.src="' + imgSrc + '";');
}

function swapimg(imgName, imgObj){
	document.images[imgName].src=eval(imgObj + '.src');
}

function preloadIcon(){
	preloadImg('icon_text_up','./images/icon_text_up_s.gif');
	preloadImg('icon_text_down','./images/icon_text_down_s.gif');
	preloadImg('icon_mp3_up','./images/icon_mp3_up_s.gif');
	preloadImg('icon_mp3_down','./images/icon_mp3_down_s.gif');
	preloadImg('icon_video_up','./images/icon_video_up_s.gif');
	preloadImg('icon_video_down','./images/icon_video_down_s.gif');
}