Image looks like a grid in slider

Hi, I have just started to construct a webpage with the SportsWear theme, but the images in the slider gets a grey cover nearly looking like a grid on top. The images should have white background.
It is on the front of website www.2bperfect.no and I get in both Google Chrome and Firefox.
Thank you for your help.

Hi!

By default, as you may see on demo there is a special grid looking image that is displayed over the slide images.
You may see it thanks to the following code:

.slider-bgr { 
	position:absolute; 
	width:100%; 
	height:100%; 
	background:url(images/fp-back.png); 
}

located inside the style.css file. If you delete this code you will get rid of this grid.