var path	= "/images/";  // image path  
var cats	= new Array(); // categories array

cats [0]="gold";
cats [1]="silver";
cats [2]="bronze";

//categories
var gold	= new Array();  
var silver	= new Array();
var bronze	= new Array();


gold [0] = "sentrymetric1.png";
gold [1] = "forefront_190.png";
gold [2] = "symantec_190.jpg";
gold [3] = "ProCurve_150.png";
gold [4] = "telus.png";

//silver [0] = "thirdbrigade1.png";
//silver [1] = "lofty_sm1.png";
silver [0] = "cms1.png";
silver [1] = "secdev_190.jpg";
silver [2] = "ecentric1.png";
silver [3] = "netwitness_190.png";
silver [4] = "enterasys_190.png";
silver [5] = "tripwire_190.png";
silver [6] = "fortinet_190.jpg";
silver [7] = "rapid7_large.png";
silver [8] = "Qualys1.png";
silver [9] = "waterfall_190.jpg";
silver [10] = "trustwave_190.jpg";

bronze [0] = "task1.png";
bronze [1] = "ncircle_190.jpg";
bronze [2] = "sourcefire_190.png";
bronze [3] = "core_190.jpg";
bronze [4] = "conexsys_190.png";
bronze [5] = "bluecoat_190.jpg";
bronze [6] = "imperva_190.png";
bronze [7] = "safend_190.jpg";
bronze [8] = "fortify_190.jpg";
bronze [9] = "msaod_190.jpg";
//bronze [7] = "kapersky_190.png";

//bronze [1] = "saint_190.jpg";
//bronze [12] = "websense_190.jpg";

//bronze [1] = "cms.png";

var check;
for(i=0;i<cats.length;i++)
	eval("var "+cats[i]+"cnt");
		

function imagetimer()
{
	setTimeout("rotate_image()",1800); //increase or decrease the number to adjust the period of rotation 
}

// no need to change anything below

function init()
{
	for(i=0;i<cats.length;i++)
	{
		var type		= cats[i];
		eval("var arrlength = "+type+".length");
		eval("var img = "+type+"[0]");
		eval("document.getElementById('"+type+"').src = '"+ path + img +"'");
		eval(type+"cnt = 1");
	}
	 
	 imagetimer();
}

function rand ( n )
{
	return ( Math.floor ( Math.random ( ) * n + 1 ) );
}


function rotate_image()
{	
	var type		= cats[rand(cats.length)-1];
	check = eval( type+"cnt");
	eval("var arrlength = "+type+".length");
	
	//alert("type:"+type+" cnt:"+check);

	if(check < arrlength)
	{		
		eval("var img = "+type+"["+check+"]");
		check++;
		eval(type+"cnt = " + check);
	}
	else
	{
		check = 0;
		eval(type+"cnt = 1 ");
		eval("var img = "+type+"["+check+"]");
	}

	eval("document.getElementById('"+type+"').src = '"+ path + img +"'");
	imagetimer();
}