var image_position = 0;
var roll = 0;
function hiLite(imgDocID, imgObjName)
{
	if (document.images)
	{
		document.images[imgDocID].src = eval(imgObjName + ".src");
	}
}

function moveImage(which_direction,a,mainimage)
{
	if (a.length > 1)
	{
		if (which_direction == "left")
		{
			if (image_position <= 0)
			{
				image_position = a.length - 1;
				newImage = eval(a[image_position]+".src");
				document.images[mainimage].src = newImage;
			}
			else
			{
				newImage = eval(a[--image_position]+".src");
				document.images[mainimage].src = newImage;
			}
		}
		else if (which_direction == "right")
		{
			if (image_position >= a.length-1)
			{
				image_position = 0;
			    newImage = eval(a[image_position]+".src");
				document.images[mainimage].src = newImage;
			}
			else
			{
				newImage = eval(a[++image_position]+".src");
				document.images[mainimage].src = newImage;
			}
		}
	}
	else
	{
		alert("There are no more images for this family.");
	}
}
function decision(message, url){
    if(confirm(message)) location.href = url;
}