var myimages=new Array();
function preloadimages(){
	
	for (i=0;i<preloadimages.arguments.length;i++){
		
		myimages[i]=new Image();
		myimages[i].src=preloadimages.arguments[i];
	
	}

}

preloadimages("uploads/images/rotation/sue.jpg","uploads/images/rotation/dewayne.jpg","uploads/images/rotation/james.jpg");





function rotatePic(){
	
	
	var img = document.getElementById('rotator');
	var aTag = document.getElementById('pic_link');
	
	var numberOfImages = 2;
	var randomNumber = getRandom(numberOfImages);
	
	//alert(randomNumber);
	
	img.src = myimages[randomNumber].src;
	
	switch(randomNumber){
		
		case 0:	img.src = myimages[0].src;
				aTag.href = "index.php?page=ttapp-program";
		break;
		
		case 1:	img.src = myimages[1].src;
				aTag.href = "index.php?page=diabetes";
		break;
		
		case 2:	img.src = myimages[2].src;
				aTag.href = "index.php?page=case-study";
		break;
		
		default: img.src = myimages[0].src;
				 aTag.href = "index.php?page=ttapp-program";
		break;
		
	}
	
	//alert(img.src);
	
	setTimeout ( 'rotatePic()', 5000 );
	
}


function getRandom(nums)
{
    var ranNum= Math.round(Math.random()*nums);
    return ranNum;
}