/**
 * 
 * @param {Object} url		the url of the image to be displayed
 */

 function showImage(url){
 	
		if(document.getElementById("previewImage").style.display != "block"){
			document.getElementById("previewImage").style.display = "block";
        		document.getElementById("previewVideo").style.display = "none";
		}
	
		try{
        		document.getElementById("previewImage").src = url;
		}catch(e){
			
		}

	  makeActive();

      }
	  
function showVideo(url){
 	
		try{
			document.getElementById("previewImage").style.display = "none";
        		document.getElementById("previewVideo").style.display = "block";
		}catch(e){
			
		}

	  makeActive();

      }
	  
function makeActive(){
	
	var elements = document.getElementsByName("aerialViewLink");
	for(var i=0;i < elements.length;i++){
		elements[i].className = "";
	}
	
}