/**
 * @author craig
 */

 
// Load a list of images into the page.
function preloadImages() { 
  	var d=document; 
	if(d.images){ 
		if(!d.a_Images) 
			d.a_Images=new Array();
			
    var i,j=d.a_Images.length;
	var a=preloadImages.arguments; 
	
	for (i = 0; i < a.length; i++) 
		if (a[i].indexOf("#") != 0) {
			d.a_Images[j] = new Image;
			d.a_Images[j++].src = a[i];
		}
	}
}

// Retore the previously swapped image back to it's original.
function swapImgRestore() { //v3.0
  var i,x,a=document.storedImages; 
  
  for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) 
  	x.src=x.oSrc;
}

// swap the image and remember the previous src.
function swapImage() { 
  var i,j=0,x,a=swapImage.arguments; 
  document.storedImages=new Array; 
  
  for(i=0;i<(a.length-2);i+=3)	
  	if ((x=findObj(a[i]))!=null){
		document.storedImages[j++]=x; 
		if(!x.oSrc) 
		    x.oSrc=x.src; 
			x.src=a[i+2];
  }
}

function findObj(n, d) { 
  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;
}