function pressThumbnail () {

var thumbnail = document.getElementById("imageTable").getElementsByTagName('td');	


				for(i=0;i<thumbnail.length;i++){
				thumbnail[i].onclick = showFeature;
				
				}				
				
function showFeature() {	
var feature = this.innerHTML;



document.getElementById("featureImage").innerHTML=feature;
		
}	

	
}