// JavaScript Document
$.fn.preloader = function(ops) {
	
	var defaults = {
		delay:200,
		preload_parent:"a",
		check_timer:300,
		ondone:function(){ },
		oneachload:function(image){  },
		fadein:500 
	};

	// variables declaration and precaching images and parent container
	var options = $.extend(defaults, ops),
	root = $(this), images = root.find("img").css({"visibility":"hidden",opacity:0}), timer, counter = 0, i = 0, checkFlag = [], delaySum = options.delay,

	init = function() {

		timer = setInterval(function() {

			if (counter >= checkFlag.length) {
				clearInterval(timer);
				options.ondone();
				return;
			}

			for (i=0; i < images.length; i++) {
				if (images[i].complete === true) {
					if (checkFlag[i] === false) {
						checkFlag[i] = true;
						options.oneachload(images[i]);
						counter++;

						delaySum = delaySum + options.delay;
					}

					$(images[i]).css("visibility","visible").delay(delaySum).animate({opacity:1},options.fadein,function(){ $(this).parent().removeClass("preloader"); });
				}
			}
		},options.check_timer);
	};

	images.each(function(){
		if ($(this).parent(options.preload_parent).length === 0) {
			$(this).wrap("<a class='preloader' />");
		} else {
			$(this).parent().addClass("preloader");
        }
		
		checkFlag[i++] = false;
	}); 
	images = $.makeArray(images);	
	
	var icon = jQuery("<img />",{
		id : 'loadingicon' ,
		src : 'modules/pages/images/preloader.gif'
	}).hide().appendTo("body");

	timer = setInterval(function(){
		if (icon[0].complete === true) {
			clearInterval(timer);
			init();
			icon.remove();
			return;
		}
	},100);
};