//Initiliaze Globals
var global_appTitle="";
var global_appID;
var global_reactivateCategory;
var slideshowImages = [];
var slideshowOffset = 0;
var slideshowVisible = 5;

function updateMid(appID, appTitle) {
	if(appID != "ALL") {						//Loading an actual category not random images
		global_appTitle=appTitle;
		global_appID=appID;
		document.getElementById("nav_cat_name").innerHTML="&gt; <a href=\"javascript: void(0);\" onclick=\"updateMid("+appID+", '"+appTitle+"')\">"+appTitle+"</a>";
		document.getElementById("nav_project_name").innerHTML="";
	}
	mid_content=document.getElementById("port_mid");
	mid_content.innerHTML="<div style=\"width: 100%; text-align: center; margin: 20px auto;\"><img src=\"images/loading.gif\" /><br />Loading</div>";
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null) {
		alert ("Your browser does not support AJAX!");
		return;
	}
	if(appID != "ALL") {						//Loading an actual category not random images
		var url="portfolio_ajax.php?catID="+appID+"&action=getProjects&getImages=true&sid="+Math.random();
		activateCategory(appID);
	} else {
		var url="portfolio_ajax.php?catID=0&action=getProjects&getImages=true&sid="+Math.random();
	}
	xmlHttp.onreadystatechange=updateMid_stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}

function updateMid_stateChanged() { 
	if (xmlHttp.readyState==4 && xmlHttp.status==200) {
		wholeResponse=xmlHttp.responseText;
		appTitle=global_appTitle;
		var imageLoader = new Array();
		if(wholeResponse=="&|&") {
			var outputString="<h2 style=\"margin: 0 0 10px; padding: 0;\">No "+appTitle+" projects found.</h2>";
		} else {
			var outputString = "<h2 style=\"margin: 0 0 15px 13px; padding: 0;\">"+appTitle+" Projects:</h2>\n";
			if(appTitle=="") {
				outputString += "<div style=\"margin-left: 13px;\">Click the industry headings to the left to see more projects of each type.</div>";
			}
			outputString+="<table border=\"0\" width=\"100%\">";
			mid_content=document.getElementById("port_mid");
			right_content=document.getElementById("port_right");
			imageArray = wholeResponse.split("\n");
			for(i=0;i<imageArray.length;i++) {
				if(imageArray[i] != "") {
					if((i % 2) == 0) {
						outputString+="<tr>\n";
					}
					imageDetails=new Array();
					imageDetails=imageArray[i].split("|");
					imageLoader[i] = new Image(1,1);
					imageLoader[i].src="portfolio_images/"+imageDetails[1]+"-3.jpg";
					outputString += "<td class=\"project_cell\">";
					outputString += "<a href=\"javascript: void(0);\" onclick=\"getDetails("+imageDetails[0]+", true);\">";
					outputString += "<img src=\"portfolio_images/"+imageDetails[2]+"-3.jpg\" border=\"0\" /><br />";
					outputString += imageDetails[1]+"</td>\n";
					if((i % 2) == 1) {
						outputString+="</tr>\n";
					}
				}
			}
			outputString+="</table>";
		}
		mid_content.innerHTML=outputString;
		right_content.innerHTML="&nbsp;";
	}
}

function getDetails(projID, reactivateCategory) {
	if(reactivateCategory) {
		global_reactivateCategory=true;
	} else {
		global_reactivateCategory=false;
	}
	mid_content=document.getElementById("port_mid");
	mid_content.innerHTML="<div style=\"width: 100%; text-align: center; margin: 20px auto;\"><img src=\"images/loading.gif\" /><br />Loading</div>";
	document.getElementById("port_right").innerHTML="";
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null) {
		alert ("Your browser does not support AJAX!");
		return;
	}
	//To load images on the right side
	var url="portfolio_ajax.php?projectID="+projID+"&action=getImages&sid="+Math.random();
	xmlHttp.onreadystatechange=getDetailsImages_stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
	
	//To load the actual project's details
	xmlHttp2=GetXmlHttpObject();
	var url2="portfolio_ajax.php?projectID="+projID+"&action=getDetails&sid="+Math.random();
	xmlHttp2.onreadystatechange=getDetails_stateChanged;
	xmlHttp2.open("GET",url2,true);
	xmlHttp2.send(null);
}

function getDetails_stateChanged() { 
	if (xmlHttp2.readyState==4) {
		parts=xmlHttp2.responseText.split("||");
		document.getElementById("port_mid").innerHTML=parts[0];
		global_appID=parts[1];						//Set the app ID again, in case no category was clicked to get here
		if(global_reactivateCategory) {
			activateCategory(parts[1]);					//To make the projects category blue and pull a menu of it's projects
		}
		bannerDiv=document.getElementById("banner");
		if(parts[2]!="NONE") {
			bannerDiv.innerHTML="<img src=\"portfolio_images/"+parts[2]+"-5.jpg\" width=\"955\" height=\"287\" />";
		}
		document.getElementById("nav_cat_name").innerHTML="&gt; <a href=\"javascript: void(0);\" onclick=\"updateMid("+parts[1]+", '"+parts[4]+"');\">"+parts[4]+"</a>";
		document.getElementById("nav_project_name").innerHTML="&gt; <a href=\"javascript: void(0);\" onclick=\"getDetails("+parts[5]+", false);\">"+parts[3]+"</a>";
	}
}

function getDetailsImages_stateChanged() {
	if(xmlHttp.readyState==4) {
		var outputString = "";
		var imageArray = new Array();
		wholeResponse=xmlHttp.responseText;
		imagesList = wholeResponse.split("\n");
		for(i=0;i<imagesList.length;i++) {
			if(imagesList[i] != "") {
				tempImage=new Image;
				tempImage.src="portfolio_images/"+imagesList[i]+"-3.jpg";
				outputString += "<img src=\"portfolio_images/"+imagesList[i]+"-3.jpg\" onclick=\"openSlideshow("+imagesList[i]+")\" alt=\"\" /><br />";
			}
		}
		document.getElementById("port_right").innerHTML=outputString;
	}
}

function openSlideshow(imgID) {
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null) {
		alert ("Your browser does not support AJAX!");
		return;
	}
	var url="portfolio_ajax_slideshow.php?imgID="+imgID+"&sid="+Math.random();
	xmlHttp.onreadystatechange=openSlideshow_stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}

function openSlideshow_stateChanged() {
	if(xmlHttp.readyState==4) {
		grayOut(true);
		slideshowDiv=document.getElementById("slideshow");
		wholeResponse=xmlHttp.responseText;
		parts=wholeResponse.split("||");
		slideshowDiv.innerHTML=parts[0];
		slideshowDiv.style.display="block";
		slideshowImages=parts[1].split("%%")
		populateImageList();
		scroll(0,0);
	}
}

function closeSlideshow() {
	grayOut(false);
	slideshowDiv=document.getElementById("slideshow");
	slideshowDiv.style.display="none";
}

function goBack() {
	updateMid(global_appID, global_appTitle);
	document.getElementById("port_right").innerHTML="";
}

function populateImageList() {
	var outputString = "";
	imgArray=slideshowImages;
	imageDiv=document.getElementById("slideshow_imageList");
	
	if(imgArray.length <= slideshowVisible+1) {								//Hide the arrows if there's too few images
		document.getElementById("slideshow_prevLink").style.visibility="hidden";
		document.getElementById("slideshow_nextLink").style.visibility="hidden";
	} else {
		document.getElementById("slideshow_prevLink").style.visibility="visible";
		document.getElementById("slideshow_nextLink").style.visibility="visible";
	}
		
	maxImgKey=slideshowOffset + slideshowVisible;				//Only room slideshowVisible number of images
	for(i=slideshowOffset;i<(imgArray.length-1);i++) {
		if(i < maxImgKey) {
			outputString += "<img src=\"portfolio_images/"+imgArray[i]+"-4.jpg\" onclick=\"updateBigImage("+imgArray[i]+");\" />";
		}
	}
	imageDiv.innerHTML=outputString;
}

function updateBigImage(imgID) {
	bigImg=document.getElementById("mainSSImg");
	newSrc="portfolio_images/"+imgID+"-1.jpg";
	bigImg.src="images/big_loading.gif";
	tempImage=new Image(1,1);
	tempImage.src=newSrc;
	bigImg.src=newSrc;
}

function nextImages() {
	if(slideshowOffset < (slideshowImages.length - (slideshowVisible + 1))) {
		slideshowOffset+=1
		populateImageList();
	}
}

function previousImages() {
	if(slideshowOffset > 0) {
		slideshowOffset -= 1;
		populateImageList();
	}
}

function activateCategory(catID) {
	//Change all the categories to white
	leftCol=document.getElementById("port_left");
	cats=leftCol.getElementsByTagName("a");
	for(i=0;i<cats.length;i++) {
		cats[i].style.color="#FFF";
	}
	//Hide all the categories sub-divs (where we show the list of projects)
	childDivs=leftCol.getElementsByTagName("div");
	for(i=0;i<childDivs.length;i++) {
		childDivs[i].innerHTML="";
	}
	//Change the active category to blue
	document.getElementById("cat_"+catID).style.color="#2D386E";
	
	//Load the list of projects for the active div
	xmlHttpPL=GetXmlHttpObject();
	if (xmlHttpPL==null) {
		alert ("Your browser does not support AJAX!");
		return;
	}
	var url="portfolio_ajax.php?action=getProjects&catID="+catID+"&getImages=false&sid="+Math.random();
	xmlHttpPL.onreadystatechange=activateCategory_stateChanged;
	xmlHttpPL.open("GET",url,true);
	xmlHttpPL.send(null);
}

function activateCategory_stateChanged() {
	if(xmlHttpPL.readyState==4) {
		outputString="";
		projects=xmlHttpPL.responseText.split("\n");
		for(i=0 ; i < (projects.length-1) ; i++) {
			parts=projects[i].split("|");
			outputString += "<a href=\"javascript: void(0);\" onclick=\"getDetails("+parts[0]+", false);\">"+parts[1]+"</a><br /><br />\n";
		}
		document.getElementById("cat_div_"+global_appID).innerHTML=outputString;
	}
}



/*   PRE MADE FUNCTIONS     */

function GetXmlHttpObject() {
	var xmlHttp=null;
	try {
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	} catch (e) {
		// Internet Explorer
		try {
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e) {
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return xmlHttp;
}

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) {
    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) {
    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%';
    }
	pageWidth="100%"
	dark.style.position="fixed";
	dark.style.top="0px";
	dark.style.left="0px";
    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';
  }
}




/*************************
*****Old Functions********
*************************/

/*
function updateBottom() {				//Load the other categories projects along the bottom
	bottom_content=document.getElementById("other_projects");
	bottom_content.innerHTML="<tr><td align=\"center\"><img src=\"images/loading.gif\" /><br />Loading</td></tr>";
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null) {
		alert ("Your browser does not support AJAX!");
		return;
	}
	var url="portfolio_ajax.php?catID="+global_appID+"&action=getProjects&sid="+Math.random();
	xmlHttp.onreadystatechange=updateBottom_stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}

function updateBottom_stateChanged() { 
	if (xmlHttp.readyState==4) {
		wholeResponse=xmlHttp.responseText;
		var imageLoader = new Array();
		var outputString = "";
		if(wholeResponse!="&|&") {
			bottom_content=document.getElementById("other_projects");
			imageArray = wholeResponse.split("\n");
			for(i=0;i<imageArray.length;i++) {
				if(imageArray[i] != "") {
					if((i % 3) == 0) {
						outputString+="<tr>";
					}
					imageDetails=new Array();
					imageDetails=imageArray[i].split("|");
					imageLoader[i] = new Image(1,1);
					imageLoader[i].src="portfolio_images/"+imageDetails[1]+"-3.jpg";
					outputString += "<td class=\"project_cell\" width=\"33%\">";
					outputString += "<a href=\"javascript: void(0);\" onclick=\"getDetails("+imageDetails[0]+");\">";
					outputString += "<img src=\"portfolio_images/"+imageDetails[2]+"-3.jpg\" border=\"0\" /><br />";
					outputString += imageDetails[1]+"</td>\n";
					if((i % 3) == 2) {
						outputString+="</tr>\n";
					}
				}
			}
		} else {
			outputString="";
		}
		bottom_content.innerHTML=outputString;
	}
}
*/