function MM_findObj(n, d) { //v3.0
  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); 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_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];}}
}

var numLayers = 3;   //the number of layers in doc
var N4 = false;      //to stop IE from choking
var IE4 = false;

//vars for browsers
if(document.layers){
  theVis = "show";
  theHide = "hide";
  theDivision = document.layers;
  N4 = true;
} else if(document.all){
  var theVis = "visible";
  var theHide = "hidden"; 
  theDivision = document.all;
  var IE4 = true; 
} else {
//  document.location = "version3browser.html"; //they go here w/out a 4 browser
}

function centerDiv(){
  if(N4) {
    var navDiv = document.layers["centering"];
    var sWidth = self.innerWidth;
    var theX = (sWidth / 2) -375;
    if (theX > 0)
      navDiv.left = theX;
    else
      navDiv.left = 0;
  } else {
    var navDiv = document.all["centering"];
    var sWidth = document.body.clientWidth;
    var theX = (sWidth / 2) -375;
    if (theX > 0)
      navDiv.style.left = theX;
    else
      navDiv.style.left = 0;
  }

}

window.onload = centerDiv;
window.onresize = centerDiv;MM_preloadImages('images/nav_f7.gif','images/nav.gif','images/nav_f6.gif','images/nav_f5.gif','images/nav_f4.gif','images/nav_f3.gif','images/nav_f2.gif','images/researchCondit_f2.gif');