var interval = 5000; 
var imageDir = "";
var imageNum = 0;
var play=0; 
var timerID;
var imageArray=new Array();

randomnumber=Math.floor(Math.random()*10000)%3+1;
randomnumber+='';


imageArray[0] = "img/custom"+randomnumber+".jpg";
randomnumber=Math.floor(Math.random()*10000)%3+1;
randomnumber+='';

imageArray[1] = "img/business"+randomnumber+".jpg";

randomnumber=Math.floor(Math.random()*10000)%3+1;
randomnumber+='';
imageArray[2] = "img/consulting"+randomnumber+".jpg";
randomnumber=Math.floor(Math.random()*10000)%3+1;
randomnumber+='';
imageArray[3] = "img/research"+randomnumber+".jpg";

randomnumber=Math.floor(Math.random()*10000)%3+1;
randomnumber+='';
imageArray[4] = "img/staffing"+randomnumber+".jpg";
randomnumber=Math.floor(Math.random()*10000)%3+1;
randomnumber+='';
imageArray[5] = "img/remote"+randomnumber+".jpg";

function imageItem() 
{ 
if(imageNum>=imageArray.length)
	imageNum=0;
if((imageNum<0) && (imageArray.length>0))
	imageNum=imageArray.length-1;	
} 

function prevImage() 
{ 
imageNum--; 
imageItem();
document.getElementById("ImgBlock").src = imageArray[imageNum]; 
var recur_call = "switchImage()"; 
timerID = setTimeout(recur_call, interval); 
} 

function switchImage(p) 
{ 
imageNum++; 
imageItem();
document.getElementById("ImgBlock").src = imageArray[imageNum]; 
var recur_call = "switchImage()"; 
timerID = setTimeout(recur_call, interval); 
} 


function playPause() 
{ 
if(play==1)
	{ 
	clearTimeout(timerID); 
	play=0; 
	}
else
	{ 
	switchImage(); 
	play=1; 
	} 
}