var count=5;
	var isLoading = 0;
	document.onscroll=updatePostsOnScroll;
	
	function updatePostsOnScroll(){
		var pos = getScrollPosition()["y"]+2000;
		var height = getDocHeight();
		if(pos>height){
			updateposts();
		}
	}
	
	function updateposts(){
	if(isLoading==0){
	isLoading = 1;
	$("#postLoading").show(10);
		$.get("ajax_code/showpost.php?count="+count,function(data){
			$(data).appendTo("#addedposts");
			count+=1;
			isLoading = 0;
			$("#postLoading").hide(10);
		});
	}
	}
	
	function getScrollPosition ()
    {

        var x = 0;
        var y = 0;

        if( typeof( window.pageYOffset ) == 'number' )
        {
            x = window.pageXOffset;
            y = window.pageYOffset;
        }
        else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) )
        {
            x = document.documentElement.scrollLeft;
            y = document.documentElement.scrollTop;
        }
        else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) )
        {
            x = document.body.scrollLeft;
            y = document.body.scrollTop;
        }

        var position =
        {
            'x' : x,
            'y' : y
        }

        return position;

    }
    
    function getDocHeight() {
    var D = document;
    return Math.max(
        Math.max(D.body.scrollHeight, D.documentElement.scrollHeight),
        Math.max(D.body.offsetHeight, D.documentElement.offsetHeight),
        Math.max(D.body.clientHeight, D.documentElement.clientHeight)
    );
}