$(document).ready(function(){
var bgImage = $('.background-image');		
 	var main_contain = $('#main_contain');
    
	$(".background-image").css('width',main_contain.width());

	function resizeImg() {
      var imgwidth = bgImage.width(),
		   imgheight = bgImage.height(),
		   winwidth = main_contain.width(),
		   winheight = main_contain.height(),
		   widthratio = winwidth / imgwidth,
		   heightratio = winheight / imgheight,
		   widthdiff = heightratio * imgwidth,
		   heightdiff = widthratio * imgheight;
 
      if(heightdiff>winheight) {

		bgImage.css({
		  width: winwidth+'px',
		  height: heightdiff+'px'
		});
      } else {
		  
        bgImage.css({
          width: widthdiff+'px',
          height: winheight+'px'
        });		
      }
    } 
    //resizeImg();
    $(window).resize(function() {
      resizeImg();
    });
});
function slideSwitch() {
    var $active = $('#main_contain IMG.active');

    if ( $active.length == 0 ) $active = $('#main_contain IMG:last');

    // use this to pull the images in the order they appear in the markup
    var $next =  $active.next().length ? $active.next()
        : $('#main_contain IMG:first');

    // uncomment the 3 lines below to pull the images in random order
    
    // var $sibs  = $active.siblings();
    // var rndNum = Math.floor(Math.random() * $sibs.length );
    // var $next  = $( $sibs[ rndNum ] );


    $active.addClass('last-active');

    $next.css({opacity: 0.0})
        .addClass('active')
        .animate({opacity: 1.0}, 1000, function() {
            $active.removeClass('active last-active');
        });
}

$(function() {
    setInterval( "slideSwitch()", 5000 );
});