function gallery(){
	if(!document.getElementById) return;
	var bigimg=document.getElementById("Bigimg");
	var thumb=document.getElementById("Thumbs").getElementsByTagName("a");
	for (var i=0; i < thumb.length ; i++){
		thumb[i].onclick=function(){
			var thumbSrc=this.getAttribute("href");
			if(!this.getElementsByTagName("img")[0].getAttribute("alt")){
				this.getElementsByTagName("img")[0].setAttribute("alt","");
			}
			var info=this.getElementsByTagName("img")[0].getAttribute("alt");
			var Info_img=document.getElementById("Info_img");
			Info_img.innerHTML='<p>'+info+'</p>';
			bigimg.setAttribute("src",thumbSrc);
			return false;
		}
	}
}
gallery()