/*
 * JQuery require when user this lib
 */
(function($){
/*
 * Pager widget
 */
$.fn.pager = function(settings) {
	var nextStr = String.fromCharCode(84,105,7871,112);
	var prevStr = String.fromCharCode(84,114,432,7899,99);
	var config = {
			count : 0,
			maxDoc : 30,
			curPage : "Page",
			submitButton : ""
	};
	$.extend(config, settings);
	this.each(function() {
		// init
		var fpageCount = config.count / config.maxDoc;
		var pageCount = Math.round(fpageCount);
		if (fpageCount > pageCount)
			pageCount++;
		if (pageCount < 2)
			return;
		var curPageID = "#" + config.curPage;
		var curPage = $(curPageID).val();
		if (isInteger(curPage))
			curPageNum = parseInt(curPage);
		// write out
		$(this).addClass("pager");
		var shtml = "";
		for ( var i = 1; i <= 2; i++) {
			shtml += "<a href='#'>" + i + "</a> ";
		}
		var firstPageInArr = curPageNum - 2;
		if (curPageNum - firstPageInArr < 5)
			firstPageInArr = curPage - 5;
		if (firstPageInArr < 3)
			firstPageInArr = 3;
		var lastPageInArr = Math.min(firstPageInArr + 10, pageCount);
		if (firstPageInArr <= lastPageInArr && firstPageInArr != 3)
			shtml += "...";
		for ( var i = firstPageInArr; i <= lastPageInArr; i++) {
			shtml += "<a href='#'>" + i + "</a> ";
		}
		if (pageCount - lastPageInArr > 2) {
			shtml += "...";
			shtml += "<a href='#'>" + (pageCount - 1) + "</a> ";
			shtml += "<a href='#'>" + (pageCount) + "</a> ";
		} else if (pageCount - lastPageInArr == 2) {
			shtml += "<a href='#'>" + (pageCount - 1) + "</a> ";
			shtml += "<a href='#'>" + (pageCount) + "</a> ";
		} else if (pageCount - lastPageInArr == 1) {
			shtml += "<a href='#'>" + (pageCount) + "</a> ";
		}
		if (curPageNum > 1)
			shtml = "<a href='#' style='margin-right: 10px;padding: 4px;'>"+prevStr+"</a>"
				+ shtml;
		if (curPageNum < pageCount)
			shtml += "<a href='#' style='margin-left: 10px;padding: 4px;'>"+nextStr+"</a>";
		$(this).append(shtml);
		var colAnc = $(this).find("a");
		colAnc.each(function() {
			var anc = $(this);
			if (anc.text() == curPageNum)
				anc.addClass("selected");
		});
		colAnc.click(function() {
			var anc = $(this);
			var ancVal = anc.text();
			if (ancVal == prevStr) {
				$(curPageID).val((curPageNum - 1));
				var submitobj = document.getElementById(config.submitButton);
				if (submitobj && anc.text() != curPageNum) {
					submitobj.click();
				}
			} else if (ancVal == nextStr) {
				$(curPageID).val((curPageNum + 1));
				var submitobj = document.getElementById(config.submitButton);
				var button = document.getElementById("chapnhan");
				if (submitobj && anc.text() != curPageNum){
					submitobj.click();
				}
			} else {
				$(curPageID).val(anc.text());
				var submitobj = document.getElementById(config.submitButton);
				if (submitobj && anc.text() != curPageNum)
					submitobj.click();
			}
		});
	});
	return this;
};
})(jQuery);