/**
* jAlert v.1.0.0
* Copyright (c) 2008 Julian Castaneda
* http://www.smooka.com/blog/
* Requires: jQuery 1.2+
*/

(function($) {
	$.fn.jAlert = function (msg, type, uid, alert_box_width, yoffset)
	{
		var tmpobj = this;
		var overlay = 0;

		if (uid == undefined)
			{	//generate an unique ID
			var d = new Date();
			var uid = d.getMonth()+""+d.getDate()+""+d.getHours()+""+d.getMinutes()+""+d.getSeconds();
		}

		if ($('#jalert_box_cont_'+uid).css('display') == 'block')
			{
			return;
		}

		if (!type) {
			// set type to a default warning
			type = 'warning';
		}

		if (!alert_box_width) {
			//set default width of alert box
			alert_box_width = 350;
		}

		if (!yoffset) {
			//set default y offset of alert box
			yoffset = 0;
		}

		if (overlay==1) {
			$('<div id="jalert_overlay_'+uid+'"></div>').prependTo('body');
			var overlayWidth = $(window).width();
			var overlayHeight = $(document).height();
			var winHeight =  $(window).height();
			$("#jalert_overlay_"+uid).css({
				top: 0, 
				left: 0, 
				width: overlayWidth, 
				height: winHeight, 
				position: "fixed",
				display: "block",
				background: "#000",
				zIndex: "1000"
			});
			$("#jalert_overlay_"+uid).css("opacity", 0.7);
		}


		//create a prepend the alert box to the container
		$('<div class="msg-box-cont msg-'+type+'" id="jalert_box_cont_'+uid+'"><table width="100%" border="0" cellpadding="0" cellspacing="0"><tr><td><div class="msg-text"><div class="msg-icon msg-icon-'+type+'"></div>'+msg+'</div></td><td width="21" valign="top"><div class="msg-btn close-'+type+'"></div></td></tr></table></div>').appendTo('body');

		$("#jalert_box_cont_"+uid).width(alert_box_width);

		alignCenter();

		//get the y (top) position of the container
		var top=this.y() + yoffset;

		$("#jalert_box_cont_"+uid).css("top",top+"px");

		$("#jalert_box_cont_"+uid).fadeIn(500).delay(1000).fadeOut('slow');
		
		$(document).click(function() {
			$("#jalert_overlay_"+uid).fadeOut(100);
			$("#jalert_overlay_"+uid).remove();
		});


		$('.msg-btn').click(function() {
			if (overlay==1) {
				$("#jalert_overlay_"+uid).fadeOut(100);
				$("#jalert_overlay_"+uid).remove();
			}
			$("#jalert_box_cont_"+uid).fadeOut(100);
			$("#jalert_box_cont_"+uid).empty();
			$("#jalert_box_cont_"+uid).remove();
			$(window).unbind("resize");
		});


		//always center
		$(window).resize(function() {alignCenter();});


		function alignCenter() {
			var alert_box_width = $("#jalert_box_cont_"+uid).width();
			//get the width of the container
			var container_width = tmpobj.innerWidth();
			// get the x position of the container
			var container_left = tmpobj.x();
			//get the center position of the alert box within the container
			var actual_left = ((container_width-alert_box_width)/2)+container_left;
			//get the y (top) position of the container
			$("#jalert_box_cont_"+uid).css("left",actual_left+"px");

		}
	};

	//vertical positioning
	$.fn.y = function(n) {
		var result = null;
		this.each(function() {
			var o = this;
			if (n === undefined) {
				var y = 0;
				if (o.offsetParent) {
					while (o.offsetParent) {
						y += o.offsetTop;
						o = o.offsetParent;
					}
				}
				if (result === null) {
					result = y;
				} else {
					result = Math.min(result, y);
				}
			} else {
				o.style.top = n + 'px';
			}
		});
		return result;
	};

	//horizontal positioning
	$.fn.x = function(n) {
		var result = null;
		this.each(function() {
			var o = this;
			if (n === undefined) {
				var x = 0;
				if (o.offsetParent) {
					while (o.offsetParent) {
						x += o.offsetLeft;
						o = o.offsetParent;
					}
				}
				if (result === null) {
					result = x;
				} else {
					result = Math.min(result, x);
				}
			} else {
				o.style.left = n + 'px';
			}
		});
		return result;
	};
})(jQuery);