// JavaScript Document
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 getInternetExplorerVersion()
// Returns the version of Internet Explorer or a -1
// (indicating the use of another browser).
{
  var rv = -1; // Return value assumes failure.
  if (navigator.appName == 'Microsoft Internet Explorer')
  {
    var ua = navigator.userAgent;
    var re  = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
    if (re.exec(ua) != null)
      rv = parseFloat( RegExp.$1 );
  }
  return rv;
}

function checkVersion()
{
  var ver = getInternetExplorerVersion();

  if ( ver > -1 )
  {
    //if ( ver <= 6.0 ) 
    //  alert("We recommend you use Mozilla FireFox, Google Chrome, or upgrade your Internet Explorer for the best viewing experience of this site.");
  }
  
}

// another function to SET the image src to something else (in case that's what you wanted to do)
// note that this function as well does not execute right away
// you use this function like this: setImgSrc("myImgId", "newImgName.jpg");
function setImgSrc (imgId, newSrc) 
{
	var imgTag = document.getElementById(imgId);
 	if (imgTag && imgTag.src) {
 
 		imgTag.src = newSrc;

	} else {
   		
		alert ("Image tag with the id of " + imgId + " does not exist!");
 	
	}

}

function isUpperCase(myString, pos) 
{ 
	return (myString.length > 0 && myString.charAt(pos) == myString.charAt(pos).toUpperCase()); 
} 


function isLowerCase(myString, pos) 
{
	return (myString.charAt(pos) == myString.charAt(pos).toLowerCase()); 
}

function getProperHeaderImg()
{
	
	var theURL = document.URL;
	var thePage = theURL.substring(theURL.lastIndexOf('/') + 1);
	if (	(theURL.search("ndorsement") < 0 || theURL.search("eaking") > 0) &&
			(theURL.search("forward.") < 0 ) &&
			(theURL.search("synopsis.") < 0) && 
	   	    (theURL.search("estimonia") > 0 || theURL.search("schedule") > 0 || theURL.search("NAMI") > 0 ||	isUpperCase(thePage, 0))
	   ) 
	{
		setImgSrc("header_img", "images/top_img_speaking.jpg");
	}
	else if(theURL.search("endors") > 0 || theURL.search("synopsis.") > 0 || theURL.search("ndorsement") > 0 || theURL.search("forward.") > 0)
	{
		setImgSrc("header_img", "images/top_img_author.jpg");
	}
	else
	{
		setImgSrc("header_img", "images/top_img_homepg.jpg");
	}
}