// JavaScript Document

function switchImage(thumbnailid,targetObj,imagePath,altText) {
	
	var imagelist = Array("images/84x54_ed-a",
						  "images/84x54_ed-b",
						  "images/84x54_ed-c",
						  "images/84x54_ed-d",
						  "images/84x54_ed-e");
	// reset all thumbs to dark
	for (var i = 1; i< imagelist.length+1; i++)
	{
		document.getElementById( "thumb"+i ).src = imagelist[i-1]+"_dark.jpg";
	}
	
	//set chosen thumb image to 'normal' not dark
	thumbnailObj = document.getElementById("thumb"+thumbnailid);
	thumbnailObj.src = imagelist[thumbnailid-1]+".jpg";
	
	

	var myObj = document.getElementById(targetObj);
	
	if (myObj.filters) 
	{
		  myObj.filters.blendTrans.apply();
		  myObj.alt = altText;
		  myObj.src = imagePath;
		  myObj.filters.blendTrans.play();
		  
	} else {
		  // browser doesn't support filters so just switch the image
		  myObj.src = imagePath;
		  myObj.alt = altText;
	}
	
	return false;
}