// Functions for swapping images
function swapImgRestore() { //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 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 for popping up windows
function popupWindow(theURL,winName,features) {
  window.open(theURL,winName,features);
}

// Function for click confirmation
function clickConfirm(theMessage) {
	if (confirm(theMessage)) {
		return true;
	}
	else {
		return false;
	}
}

// Function that focuses a cursor in a given field
function focusCursor(field,sel) {
	if (field.value.length==0 && sel==1) {
		field.focus();
		field.select();
	} else {
		field.focus();
	}
}

// Loads interior navigation
function preloadNav() {
	preloadImages('/images/interface/interior/geninfo_f2.gif','/images/interface/interior/register_f2.gif','/images/interface/interior/sciprog_f2.gif','/images/interface/interior/social_f2.gif','/images/interface/interior/recreation_f2.gif','/images/interface/interior/gbas_f2.gif','/images/interface/interior/exhibits_f2.gif','/images/interface/interior/credentialing_f2.gif','/images/interface/interior/travel_f2.gif','/images/interface/interior/hotel_f2.gif');
}