function changeArtist(artist_id){
	var query_frame = document.getElementById("query_frame");
	var ArtistRight = document.getElementById("ArtistRight");
		var ArtistPaintings = document.getElementById("ArtistPaintings");

	var get_value = "";
	
	ArtistRight.innerHTML = '<div><img src="images/loading.gif" width="20" /> Loading ... </div>';
	ArtistPaintings.innerHTML = '<div><img src="images/loading.gif" width="20" /> Loading ... </div>';
	
	get_value += "artist_id="+artist_id;
	
	query_frame.src = "inc/php/gen_artist_info.php?"+get_value;
}

function genArtistList(country_label){
	var query_frame = document.getElementById("query_frame");
	var country_selected = document.getElementById("country_selected");
	var get_value = "";
	
	get_value += "country_label="+country_label;
	
	query_frame.src = "inc/php/gen_artist_list.php?"+get_value;
}

function genPaintings(status){
	var query_frame = document.getElementById("query_frame");
	var ArtistPaintings = document.getElementById("ArtistPaintings");
	var artist_id = document.getElementById("artist_selected").value;
	var get_value = "";
		
	ArtistPaintings.innerHTML = '<div><img src="images/loading.gif" width="20" /> Loading ... </div>';

	get_value += "status="+status;
	get_value += "&artist_id="+artist_id;
	
	query_frame.src = "inc/php/gen_paintings.php?"+get_value;
}

//function previousPage(){
//	var obj = document.getElementById("ImageContainer").style;
//	var num_paintings = document.getElementById("num_paintings").value;
//	var previous_button = document.getElementById("PreviousPage").value;
//	var next_button = document.getElementById("NexPage").value;
//	
//	var x = 400;
//	
//	if (obj.left.length == 0) 
//		obj.left = 0
//
//	var pos = parseInt(obj.left) + x;
//	obj.left = pos+"px";
//	
////	SlideX("ImageContainer", x);
//
//
//}
//
//function nextPage(){
//	var obj = document.getElementById("ImageContainer").style;
//	var num_paintings = document.getElementById("num_paintings").value;
//	var previous_button = document.getElementById("PreviousPage").value;
//	var next_button = document.getElementById("NexPage").value;
//	
//	var x = -400;	
//	
//	if (obj.left.length == 0) 
//		obj.left = 0
//
//	var pos = parseInt(obj.left) + x;
//	obj.left = pos+"px";
//	
//	if (parseInt(obj.left) > 0){
//		previous_button.innerHTML = "previous";
//	}
//	
//	num_pages = Math.ceil(num_paintings / 4);
//	
//	if (((num_pages - 1)  * -400) > parseInt(obj.left)){
//		next_button.innerHTML = "next";
//	}
//	
////	SlideX("ImageContainer", x);
//}

function movePage(x){
	var obj = document.getElementById("ImageContainer").style;
	var num_paintings = document.getElementById("num_paintings").value;
	var previous_button = document.getElementById("PreviousPage");
	var next_button = document.getElementById("NextPage");
	
	if (obj.left.length == 0) 
		obj.left = 0

	var pos = parseInt(obj.left) + x;
	obj.left = pos+"px";
	
	if (parseInt(obj.left) < 0){
		previous_button.innerHTML = "previous";
	} else {
		previous_button.innerHTML = "";
	}
	
	num_pages = Math.ceil(num_paintings / 5);
	
//	alert(num_pages);
//	alert(parseInt(obj.left));
	
	if (((num_pages - 1)  * -500) < parseInt(obj.left)){
		next_button.innerHTML = "next";
	} else {
		next_button.innerHTML = "";
	}
	
//	SlideX("ImageContainer", x);
}


//function SlideX(id, position){
//	var obj = document.getElementById(id).style;
//	var speed = 10;
//	
//	if (obj.left.length <= 0) 
//		obj.left = 0;
//	obj.xpos = parseInt(obj.left);
//	alert(obj.xpos);
//	
////	alert(Math.abs(obj.xpos - position));
//	
//	if (Math.abs(obj.xpos - position) > 0) {
//		if (position < 0) 
//			speed = -speed;
//			
//		obj.xpos += speed;
//		obj.left = obj.xpos+"px";
//		
//		setTimeout("SlideX('"+id+"', "+position+")", 2000)
//	} 
//}