function checkSearch(){
	if (document.getElementById('key').value.length == 0){
		window.alert('Please enter some search terms.');
		document.getElementById('key').focus();
		return false
	}
	else {
		return true
	}
}
function openCenteredWindow(url, name, height, width) {

   var maxHeight = height
   var maxWidth = width
   var left = Math.floor( (screen.width - maxWidth) / 2);
   var top = Math.floor( (screen.height - maxHeight) / 2);

   var winParms = "top=" + top + ",left=" + left + ",height=" + maxHeight + ",width=" + maxWidth + ",scrollbars=1,locationbar=0,directories=0,resizable=1,statusbar=0,toolbar=0;"

   var win = window.open(url, name, winParms);

   if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
   return
}

if (top.location != self.location) {
	top.location = self.location
}
function back() {
    history.go(-1);
}
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;
}
function swapImage() { //v3.0
  var i,j=0,x,a=swapImage.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 swapRestore() { //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;
}

function preloadImages() { //v3.0
 var d=document; if(d.images){ if(!d.p) d.p=new Array();
   var i,j=d.p.length,a=preloadImages.arguments; for(i=0; i<a.length; i++)
   if (a[i].indexOf("#")!=0){ d.p[j]=new Image; d.p[j++].src=a[i];}}
}
function jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}