function replace(image) {
document.getElementById("default").style.display = 'none';
document.getElementById("space").style.display = 'block';
document.getElementById("space").style.height = '130px';
<!-- START Vietnam Assets --->
if (image == "photoVietnam1") {
       document.getElementById("photoVietnam1").style.display = 'block';
	   					} else {
	   document.getElementById("photoVietnam1").style.display = 'none';				
						}
						
if (image == "photoVietnam2") {
       document.getElementById("photoVietnam2").style.display = 'block';
	   					} else {
	   document.getElementById("photoVietnam2").style.display = 'none';				
						}					

if (image == "photoVietnam3") {
       document.getElementById("photoVietnam3").style.display = 'block';
	   					} else {
	   document.getElementById("photoVietnam3").style.display = 'none';				
						}
						
if (image == "photoVietnam4") {
       document.getElementById("photoVietnam4").style.display = 'block';
	   					} else {
	   document.getElementById("photoVietnam4").style.display = 'none';				
						}	
						
if (image == "photoVietnam5") {
       document.getElementById("photoVietnam5").style.display = 'block';
	   					} else {
	   document.getElementById("photoVietnam5").style.display = 'none';				
						}
						
if (image == "photoVietnam6") {
       document.getElementById("photoVietnam6").style.display = 'block';
	   					} else {
	   document.getElementById("photoVietnam6").style.display = 'none';				
						}
if (image == "photoVietnam7") {
       document.getElementById("photoVietnam7").style.display = 'block';
	   					} else {
	   document.getElementById("photoVietnam7").style.display = 'none';				
						}
						
<!-- END Vietnam Assets -->		
						
						
}