function $(a) {
		return document.getElementById(a);
	}
	
	function loadFullsize() {
		var fullSize = $('fullsize');
		var filePath = this.src.match(/([^\/]+)$/i);
		
//		alert(filePath[1]);
		fullSize.src = '/_img/gallery/fullsize/'+filePath[1];
//		alert(fullSize.src);
		
	}
	
	window.onload = function() {
		var imgs = $('gallery_nav').getElementsByTagName('img');
		
		for(i = 0 ; i < imgs.length ; i++ ) {
			imgs[i].onclick = loadFullsize;
		}
	}