function unv(imgname) {
	if (navigator.appVersion > "3") {
		imgnum = new Image();
		imgpath = document.images[imgname].src;

		if( imgpath.indexOf("_on.gif") >= 0 ){
			imgpath = imgpath.replace("_on.gif", ".gif");
		}else if( imgpath.indexOf("_on.jpg") >= 0 ){
			imgpath = imgpath.replace("_on.jpg", ".jpg");
		}else if( imgpath.indexOf(".gif") >= 0 ){
			imgpath = imgpath.replace(".gif", "_on.gif");
		}else{
			imgpath = imgpath.replace(".jpg", "_on.jpg");
		}

		imgnum.src = imgpath;
		document.images[imgname].src = imgnum.src;
	}
}

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_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 setFocus( that) {
	that._defaultValue = that.value;
	that.value = '';
	that.onblur = function() {
		if( that.value === '' ) {
			that.value = that._defaultValue;
		}
	}
	that.onfocus = function() {
		if( that.value === that._defaultValue ) {
			that.value = '';
		}
	}
}