var byprodimages=new Array();
						var curImage=-1;
						var numImages=4;
byprodimages[0]=new Image();
							byprodimages[0].src="uploads/1.jpg";
byprodimages[1]=new Image();
							byprodimages[1].src="uploads/2.jpg";
byprodimages[2]=new Image();
							byprodimages[2].src="uploads/3.jpg";
byprodimages[3]=new Image();
							byprodimages[3].src="uploads/4.jpg";
function swapByprodImages(){
							if (document.images){
						    	var nextImage=curImage+1;
							    if (nextImage>=numImages){
									nextImage=0;
								}
					    		if (byprodimages[nextImage] && byprodimages[nextImage].complete){
									var target=0;
									if (document.images.byprodPhotos){
										target=document.images.byprodPhotos;
									}
									if (document.all && document.getElementById("byprodPhotos")){
										target=document.getElementById("byprodPhotos");
									}
									// Changing the captions!!! 
if (nextImage==9999) {
								document.getElementById('overviewImageCaption').innerHTML = '';
} else if (nextImage==0) {
										document.getElementById('overviewImageCaption').innerHTML = 'Tank cars containing bulk-liquid chemicals being inspected before shipment.<br /><br />';
} else if (nextImage==1) {
										document.getElementById('overviewImageCaption').innerHTML = 'Dry-bulk material being loaded onto a barge for shipment to manufacturing facility down river.<br /><br />';
} else if (nextImage==2) {
										document.getElementById('overviewImageCaption').innerHTML = 'Covered hopper rail cars containing dried distillers grain en route to processing facility.<br /><br />';
} else if (nextImage==3) {
										document.getElementById('overviewImageCaption').innerHTML = 'Mineral by-product being transported by barge.<br /><br />';
}
			// Make sure target is valid. It might not be valid if the page has not finished loading.
									if (target){
										target.src=byprodimages[nextImage].src;
										curImage=nextImage;
									}
									setTimeout("swapByprodImages()", 7000);
								} else { 
									setTimeout("swapByprodImages()", 700);
								}
							}
						}
						setTimeout("swapByprodImages()", 7000);