var pageID = new Array();
var _l=document.location.toString().split("?"); 
if(_l[1])
{
	pageID = _l.toString().split("=");
}else{
	pageID[1] = 0;
};//end if

function changeTo(){
   var newLoad = new Image();
   newLoad.src = varPictures[pageID[1]];
   document.images.mypicture.src = newLoad.src;
}


function nextImage() {
	var maxItems = varPictures.length;
	pageID[1]=parseInt(pageID[1]);
	pageID[1]=pageID[1]+1;
	if (pageID[1]>(maxItems-1)) {
		pageID[1]=0;
	};//end if
	changeTo();
}

function previousImage() {
	var maxItems = varPictures.length;
	pageID[1]=parseInt(pageID[1]);
	pageID[1]=pageID[1]-1;
	if (pageID[1]<0) {
		pageID[1]=maxItems-1;
	};//end if
	changeTo();
}