var myPix = new Array ("img/splash/splash1.jpg",
  		   "img/splash/splash2.jpg",
                   "img/splash/splash3.jpg",
  		   "img/splash/splash4.jpg")
  		
	
		function choosePic(){
 		 if (document.images){
 		   randomNum=
 		   Math.floor((Math.random()*4))%4
 		   document.myPicture.src=myPix[randomNum]
		  }
		}