function gallery(id)
	{
		if(id==1){
					document.getElementById("bigimage").style.background = "url(../images/lava/active_lava_flow.jpg)";
					document.getElementById("caption").innerHTML='Active lava flow';
										}
		if(id==2){
					document.getElementById("bigimage").style.background = "url(../images/lava/dry_black_lava.jpg)";
					document.getElementById("caption").innerHTML='Dry black lava';
					}
		if(id==3){
					document.getElementById("bigimage").style.background = "url(../images/lava/hot_steaming_lava.jpg)";
					document.getElementById("caption").innerHTML='Hote steaming lava';
					}
		if(id==4){
					document.getElementById("bigimage").style.background = "url(../images/lava/inside_the_turston_lava_tube.jpg)";
					document.getElementById("caption").innerHTML='Inside the turston lava tube';
					}
		if(id==5){
					document.getElementById("bigimage").style.background = "url(../images/lava/kilauea_barren_bottom.jpg)";
					document.getElementById("caption").innerHTML='Kilauea barren bottom';
					}
		if(id==6){
					document.getElementById("bigimage").style.background = "url(../images/lava/lava_flow_covers_street.jpg)";
					document.getElementById("caption").innerHTML='Lava flow covers street';
					}
					
					
		if(id==7){
					document.getElementById("bigimage").style.background = "url(../images/lava/lava_flowing_into_the_ocean.jpg)";
					document.getElementById("caption").innerHTML='Lava flowing into the ocean';
										}
		if(id==8){
					document.getElementById("bigimage").style.background = "url(../images/lava/lava_meets_the_ocean.jpg)";
					document.getElementById("caption").innerHTML='Lava meets the ocean';
					}
		if(id==9){
					document.getElementById("bigimage").style.background = "url(../images/lava/lava_puddle.jpg)";
					document.getElementById("caption").innerHTML='Lava puddle';
					}
		if(id==10){
					document.getElementById("bigimage").style.background = "url(../images/lava/mauna_kea_lava.jpg)";
					document.getElementById("caption").innerHTML='Mauna Kea lava';
					}
		if(id==11){
					document.getElementById("bigimage").style.background = "url(../images/lava/recent_lava_flow_covering_street.jpg)";
					document.getElementById("caption").innerHTML='Recent lava flow covering street';
					}
		if(id==12){
					document.getElementById("bigimage").style.background = "url(../images/lava/red_lava_flow.jpg)";
					document.getElementById("caption").innerHTML='Red lava flow';
					}
		
					
	}