//gallery array is set in VehicleGallery
//gallery contstants
var photoLoopOn=false;
var currentPhoto=0;
//gallery methods
function goPhoto(idx,halt){
	if(halt)photoLoopOn=false;
	var divPhoto=document.getElementById('divPhoto');
	divPhoto.style.width=widthArray[idx] + 'px';
	//divPhoto.style.marginTop=offSetHeightArray[idx] + 'px';
	
	var divLightboxBefore=document.getElementById('divLightboxBefore');
	var divLightboxAfter=document.getElementById('divLightboxAfter');
	
	var strBefore="";
	var strPrevious="";
	var strAfter="";
	if (photoArray.length > 1)
	{
	    var before;
        for (before=idx;before>0;before=before-1) 
        {
            strPrevious = strBefore;
            strBefore = '<a href="' + photoArray[before-1] + '" rel="lightbox[portfolio]" title="' + captionArray[before-1] + '"></a>' + strPrevious;
        }
        
        var after;
        for (after=idx;after<photoArray.length-1;after=after+1) 
        {
            strAfter = strAfter + '<a href="' + photoArray[after+1] + '" rel="lightbox[portfolio]" title="' + captionArray[after+1] + '"></a>';
        }
        
        
    }
    //alert(strBefore);
	divLightboxBefore.innerHTML = strBefore;
	divLightboxAfter.innerHTML = strAfter;

	var photoLink=document.getElementById('photoLink');
	photoLink.href=photoArray[idx];
	photoLink.title = captionArray[idx];

	var photoCaption=document.getElementById('photoCaption');
	photoCaption.innerHTML = captionArray[idx];
	
	var photo=document.getElementById('photo');
	photo.src=photoArray[idx];
	photo.width=widthArray[idx];
	photo.height=heightArray[idx];
	photo.alt=captionArray[idx];
	photo.title=captionArray[idx];

	currentPhoto=idx;
}
function focusThumb(idx){
	if(parseInt(document.body.clientHeight)>550){
		var thumb=document.getElementById('thumb'+(idx+1));
		thumb.focus();
	}
}
function firstPhoto(halt){
	goPhoto(0,halt);
	if(halt)focusThumb(0);
}
function prevPhoto(){
	if(currentPhoto>0){
		var idx=currentPhoto-1;
		goPhoto(idx,true);
		focusThumb(idx);
	}else{
		photoLoopOn=false;
	}
}
function nextPhoto(){
	if(currentPhoto<photoArray.length-1){
		var idx=currentPhoto+1;
		goPhoto(idx,true);
		focusThumb(idx);
	}else{
		photoLoopOn=false;
	}
}
function lastPhoto(){
	goPhoto(photoArray.length-1,true);
	focusThumb(photoArray.length-1);
}
function loopPhotos(){
	if(photoLoopOn){
		if(currentPhoto>=photoArray.length-1){
			firstPhoto(false);
		}else{
			goPhoto(currentPhoto+1,false);
		}
		setTimeout('loopPhotos()',3000);
	}
}
function togglePhotoLoop(){
	if(photoLoopOn){
		photoLoopOn=false;
	}else{
		photoLoopOn=true;
		loopPhotos();
	}
}