function showNewColor() {
       var randomnumber=Math.floor(Math.random()*7)
       var newImg = 'url(../images/header_photos/headertestimonials.jpg)';
	   
	    if(randomnumber == 0){		
		 var newImg = 'url(../images/header_photos/headerarticles.jpg)';
		}
		if(randomnumber == 1){
			var newImg = 'url(../images/header_photos/headerbio.jpg)';
		}
        if(randomnumber == 2){
			var newImg = 'url(../images/header_photos/headernews.jpg)';
		}
		 if(randomnumber == 3){
			var newImg = 'url(../images/header_photos/headerlinks.jpg)';
		}
		 if(randomnumber == 4){
			var newImg = 'url(../images/header_photos/headercontact.jpg)';
		}
		if(randomnumber == 5){
			var newImg = 'url(../images/header_photos/headerproducts.jpg)';
		}
		if(randomnumber == 6){
			var newImg = 'url(../images/header_photos/headertestimonials.jpg)';
		}
			var myElement = document.getElementById('SwapMain');
            myElement.style.background = newImg;
            

	}