/************************	Image Triggers	*************************/

function highlightImage(thisImage){
	thisImage.style.filter="alpha(opacity=100)";
	thisImage.style.opacity="1.00";
	buildDesc(thisImage.id);
}
function fadeImage(thisImage){
	thisImage.style.filter="alpha(opacity=60)";
	thisImage.style.opacity=".6";
	document.getElementById("project_description").innerHTML = "";
	httpObject = "";
}

/************************	Image Triggers	*************************/




/************************	Loading Controls	*************************/
function close_panel(panel_name)
{
	var panel = document.getElementById(panel_name);
	panel.style.display="none";
	panel.innerHTML = "";
	grayOut(false, {});
}

function show_loading_panel()
{
	var left = document.body.offsetWidth/2;
	var height = document.body.offsetHeight/2;
	grayOut(true, {});
	
	var loading_panel = document.getElementById('add_panel');
	loading_panel.innerHTML = "<img src='../images/loading.gif' />";
	loading_panel.style.left = left;
	loading_panel.style.top = height;
	loading_panel.style.position = "absolute";
	loading_panel.style.zIndex = 200;
	loading_panel.style.display = "block";
}
/************************	Loading Controls	*************************/



/************************	AJAX Functions	*************************/
function buildDesc(thisDesc)
{        
	if(window.ActiveXObject){
		httpObject = new ActiveXObject("Microsoft.XMLHTTP");
	}
	else if(window.XMLHttpRequest){ //Mozilla, Firefox, Opera 8.01, Safari
		httpObject = new XMLHttpRequest(); 
	}
	if (httpObject)
	{
		var now = new Date();
		httpObject.open("GET", "config/gallery.ajax.php?control=get-description&project=" + thisDesc + "&time=" + now, true);
		document.getElementById("project_description").innerHTML = "<img src='images/loading.gif'>";
		httpObject.onreadystatechange = show_desc;
		httpObject.send(null);
	}
	else alert("Your browser does not support AJAX");
}

function add_image()
{        
	show_loading_panel();
	
	if(window.ActiveXObject){
		httpObject = new ActiveXObject("Microsoft.XMLHTTP");
	}
	else if(window.XMLHttpRequest){ //Mozilla, Firefox, Opera 8.01, Safari
		httpObject = new XMLHttpRequest(); 
	}
	if (httpObject)
	{
		var now = new Date();
		httpObject.open("GET", "../config/gallery.ajax.php?control=add-image&time=" + now, true);
		httpObject.send();
		httpObject.onreadystatechange = build_panel;
	}
	else alert("Your browser does not support AJAX");
}

function add_project()
{
	show_loading_panel();
	
	if(window.ActiveXObject){
		httpObject = new ActiveXObject("Microsoft.XMLHTTP");
	}
	else if(window.XMLHttpRequest){ //Mozilla, Firefox, Opera 8.01, Safari
		httpObject = new XMLHttpRequest(); 
	}
	if (httpObject)
	{
		var now = new Date();
		httpObject.open("GET", "../config/gallery.ajax.php?control=add-project&time=" + now, true);
		httpObject.send();
		httpObject.onreadystatechange = build_panel;
	}
	else alert("Your browser does not support AJAX");
}

function edit_project(project)
{
	show_loading_panel();
	
	if(window.ActiveXObject){
		httpObject = new ActiveXObject("Microsoft.XMLHTTP");
	}
	else if(window.XMLHttpRequest){ //Mozilla, Firefox, Opera 8.01, Safari
		httpObject = new XMLHttpRequest(); 
	}
	if (httpObject)
	{
		var now = new Date();
		httpObject.open("GET", "../config/gallery.ajax.php?control=edit-project&project=" + project + "&time=" + now, true);
		httpObject.send();
		httpObject.onreadystatechange = build_panel;
	}
	else alert("Your browser does not support AJAX");
}

function add_category()
{
	show_loading_panel();
	
	if(window.ActiveXObject){
		httpObject = new ActiveXObject("Microsoft.XMLHTTP");
	}
	else if(window.XMLHttpRequest){ //Mozilla, Firefox, Opera 8.01, Safari
		httpObject = new XMLHttpRequest(); 
	}
	if (httpObject)
	{
		var now = new Date();
		httpObject.open("GET", "../config/gallery.ajax.php?control=add-category&time=" + now, true);
		httpObject.send();
		httpObject.onreadystatechange = build_panel;
	}
	else alert("Your browser does not support AJAX")
}

function build_panel()
{
	if(httpObject.readyState == 4)
	{
		document.getElementById("add_panel").innerHTML = httpObject.responseText;
	}
}

function show_desc()
{    
	if(httpObject.readyState == 4 || httpObject.readyState=="complete")
	{
		document.getElementById("project_description").innerHTML = httpObject.responseText;
	}
}
/************************	AJAX Functions	*************************/

/************************	Screen Grey Out	*************************/
function grayOut(vis, options) {  
// Pass true to gray out screen, false to ungray  
// options are optional.  This is a JSON object with the following (optional) properties  
// opacity:0-100         
// Lower number = less grayout higher = more of a blackout   
// zindex: #             
// HTML elements with a higher zindex appear on top of the gray out  
// bgcolor: (#xxxxxx)    
// Standard RGB Hex color code  
// grayOut(true, {'zindex':'50', 'bgcolor':'#0000FF', 'opacity':'70'}); 
// Because options is JSON opacity/zindex/bgcolor are all optional and can appear  
// in any order.  Pass only the properties you need to set.  
	var options = options || {};  
	var zindex = options.zindex || 50; 
	var opacity = options.opacity || 70;  
	var opaque = (opacity / 100);  
	var bgcolor = options.bgcolor || '#000000'; 
	var dark=document.getElementById('darkenScreenObject');  
	if (!dark) {    
		// The dark layer doesn't exist, it's never been created.  So we'll    
		// create it here and apply some basic styles.    
		// If you are getting errors in IE see: http://support.microsoft.com/default.aspx/kb/927917    
		var tbody = document.getElementsByTagName("body")[0];    
		var tnode = document.createElement('div');           
		// Create the layer.        
		tnode.style.position='absolute';                
		// Position absolutely        
		tnode.style.top='0px';                           
		// In the top        
		tnode.style.left='0px';                          
		// Left corner of the page        
		tnode.style.overflow='hidden';                   
		// Try to avoid making scroll bars                   
		tnode.style.display='none';                      
		// Start out Hidden        
		tnode.id='darkenScreenObject';                  
		// Name it so we can find it later    
		tbody.appendChild(tnode);                            
		// Add it to the web page    
		dark=document.getElementById('darkenScreenObject');  
		// Get the object.  
		}  
	if (vis) {    
		// Calculate the page width and height     
		if( document.body && ( document.body.scrollWidth || document.body.scrollHeight ) ) {        
		var pageWidth = document.body.scrollWidth+'px';        
		var pageHeight = document.body.scrollHeight+'px';   
		} 
		else if( document.body.offsetWidth ) {      
		var pageWidth = document.body.offsetWidth+'px';     
		var pageHeight = document.body.offsetHeight+'px';    
		} 
		else {       
		var pageWidth='100%';       
		var pageHeight='100%';    
		}       
		//set the shader to cover the entire page and make it visible.   
		dark.style.opacity=opaque;                          
		dark.style.MozOpacity=opaque;                       
		dark.style.filter='alpha(opacity='+opacity+')';     
		dark.style.zIndex=zindex;            
		dark.style.backgroundColor=bgcolor;      
		dark.style.width= pageWidth;    
		dark.style.height= pageHeight;    
		dark.style.display='block';                            
	} 
	else {     dark.style.display='none';  }
}
/************************	Screen Grey Out	*************************/