// JavaScript Document


function swapImg(button){
	var activeImage;
	var clickedImage = button.getElementsByTagName("img")[0];
	var allLargeImages = document.getElementById("Main_Image_Container").getElementsByTagName("img");
	var allZoomBtns = document.getElementById("zoom_container").getElementsByTagName("a");

	var ZoomImageSrc = clickedImage.src.substring(clickedImage.src.lastIndexOf("/")+1, clickedImage.src.lastIndexOf("."));
	var i;
	for(i=0; i<allLargeImages.length; i++){
		allZoomBtns[i].style.display = "none";
		
		if(ZoomImageSrc == allZoomBtns[i].getAttribute("thumb")){
			allZoomBtns[i].style.display = "block";
		}
		
		if(allLargeImages[i].style.display !== "none"){
			activeImage = allLargeImages[i];
		}
	}	
	var newActiveImage = clickedImage.src;
	clickedImage.src = activeImage.src;
	activeImage.src = newActiveImage;
}