var g_itemScrollInfo=new Array();

function scollItem(contentdiv_id, dir) 
{
	if (dir > 0) {
		if (g_itemScrollInfo[contentdiv_id].curpage+1 < g_itemScrollInfo[contentdiv_id].numpages) {
			$("#"+contentdiv_id).animate({
				"left": "-=479px"
			},800);
			g_itemScrollInfo[contentdiv_id].curpage++;
		}
	} else {
		if (g_itemScrollInfo[contentdiv_id].curpage-1 >= 0) {
			$("#"+contentdiv_id).animate({
				"left": "+=479px"
			},800);
			g_itemScrollInfo[contentdiv_id].curpage--;
		}
	}
	
	updatePagerButton(contentdiv_id);
}

function scollItem_wide(contentdiv_id, dir) 
{
	if (dir > 0) {
		if (g_itemScrollInfo[contentdiv_id].curpage+1 < g_itemScrollInfo[contentdiv_id].numpages) {
			$("#"+contentdiv_id).animate({
				"left": "-=673px"
			},800);
			g_itemScrollInfo[contentdiv_id].curpage++;
		}
	} else {
		if (g_itemScrollInfo[contentdiv_id].curpage-1 >= 0) {
			$("#"+contentdiv_id).animate({
				"left": "+=673px"
			},800);
			g_itemScrollInfo[contentdiv_id].curpage--;
		}
	}
	
	updatePagerButton(contentdiv_id);
}


function initItemScroll(contentdiv_id, pager_left_id, pager_right_id, num_page) {
	$.event.add(window, "load", function() {
		g_itemScrollInfo[contentdiv_id] = {
			divname: contentdiv_id,
			leftname: pager_left_id,
			rightname: pager_right_id,
			numpages: num_page,
			curpage: 0
		};
		updatePagerButton(contentdiv_id);
	});
}

function updatePagerButton(contentdiv_id) {
	if (g_itemScrollInfo[contentdiv_id].curpage-1 >= 0) {
		$("#"+g_itemScrollInfo[contentdiv_id].leftname).css({visibility:"visible"});
	} else {
		$("#"+g_itemScrollInfo[contentdiv_id].leftname).css({visibility:"hidden"});
	}
	
	if (g_itemScrollInfo[contentdiv_id].curpage+1 < g_itemScrollInfo[contentdiv_id].numpages) {
	
		$("#"+g_itemScrollInfo[contentdiv_id].rightname).css({visibility:"visible"});
	} else {
		$("#"+g_itemScrollInfo[contentdiv_id].rightname).css({visibility:"hidden"});
	}
}