function gopict(sdir)
{
var wdir=sdir

//determine which direction
if (wdir=="F") {
	//forward
	picture_num++;
	if (picture_num == pictures.length) 
	{
			
		picture_num = 0;
	}

}
else {
	//backward
	picture_num--;
	if (picture_num == -1) 
	{
		picture_num = pictures.length-1;
	}

}
	
	if(document.all){
		desc.innerText=(picture_num+1) + ''
		picdesc.innerText=captions[picture_num]
	}
	else {
		//netscape
		var fredlayer
		fredlayer = document.getElementById("desc")
		fredlayer.innerHTML =(picture_num+1) + ''

        var barneylayer
        barneylayer = document.getElementById("picdesc")
        barneylayer.innerHTML =captions[picture_num]
	}



	//resize image
	if (document.images) {


		document['listingpict'].src = shirtImg[picture_num].src

		if (shirtImg[picture_num].height > shirtImg[picture_num].width) {
			
			document['listingpict'].height=550
			document['listingpict'].width=338
		}
	       
        if (shirtImg[picture_num].height < shirtImg[picture_num].width) {
			document['listingpict'].height=550
			document['listingpict'].width=600
		}
				

	
	}	
	
}