function gallery(id)
	{
		if(id==1){
					document.getElementById("bigimage").style.background = "url(../images/whales/humpback_whale_near_maui.jpg)";
					
										}
		if(id==2){
					document.getElementById("bigimage").style.background = "url(../images/whales/breaching_whale.jpg)";
					
					}
		if(id==3){
					document.getElementById("bigimage").style.background = "url(../images/whales/boat_on_a_whale_watching_tour.jpg)";
					
					}
	
		if(id==4){
					document.getElementById("bigimage").style.background = "url(../images/whales/whale_near_maui.jpg)";
					
					}					
	}