function MM_preloadImages() { //v3.0
	var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
		var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
			if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
	var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
	var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
	if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
	for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
	if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
	var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
		if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function changeImage(img){
	document.getElementById('first_image').innerHTML = img;
	return false;
}

function Hide(){
	Obj.style.visibility='hidden';
}

function toggle_visibility(id) { 
	var e = document.getElementById(id); 
	if(e.style.visibility == 'visible') 
		e.style.visibility = 'hidden'; 
	else 
		e.style.visibility = 'visible'; 
}


function get_view(page)
{
    // instantiate XMLHttpRequest object
    try
    {
        xhr = new XMLHttpRequest();
    }
    catch (err)
    {
        xhr = new ActiveXObject("Microsoft.XMLHTTP");
    }
    
    // handle old browsers
    if (xhr == null)
        alert("Ajax not supported by your browser!");
    
    // construct URL
    var url='scripts/'+ page;
    if (page =="recent_posts.php") {
    	xhr.onreadystatechange = post_handler; }
    else {
    	xhr.onreadystatechange = image_handler; }
    xhr.open("GET", url, true);
    xhr.send(null);
    
    return false;
}

function post_handler()
{
    // only handle loaded requests
    if (xhr.readyState == 4)
    {
        // display response if possible
        if (xhr.status == 200) {
            // replace div#display with html output from view.php
            document.getElementById("recent_posts").innerHTML = xhr.responseText;
            toggle_visibility('posts_loading'); }
        else {
            alert("Error with Ajax call!"); }
    }
}
function image_handler()
{
    // only handle loaded requests
    if (xhr.readyState == 4)
    {
        // display response if possible
        if (xhr.status == 200) {
            // replace div#display with html output from view.php
            document.getElementById("recent_images").innerHTML = xhr.responseText;
            toggle_visibility('images_loading'); }
        else {
            alert("Error with Ajax call!"); }
    }
}