//preload images
var image1=new Image()
image1.src="images/features1.jpg"

var image2=new Image()
image2.src="images/features2.jpg"

var image3=new Image()
image3.src="images/features3.jpg"

var image4=new Image()
image4.src="images/features4.jpg"

var image5=new Image()
image5.src="images/features5.jpg"

var image6=new Image()
image6.src="images/features6.jpg"