var client = new Object();
client.whoBrouser = function(){
	if(document.all && navigator.userAgent.indexOf('Opera')<0) return "ie";
	else return "normal"; 
}
client["brouser"] = client.whoBrouser();
function setOpacity(_obj,opacity){
	var _obj = _obj;
	var opacity = opacity;
	if(client["brouser"] == "normal"){
		_obj.style.opacity = opacity/10;
	}else if(client["brouser"] == "ie"){
		_obj.style.filter = "progid:DXImageTransform.Microsoft.Alpha(opacity="+opacity*10+")";
	}
}
function gallery(_this){
	var big_img = document.getElementsByTagName('table')[0].getElementsByTagName('td')[0].getElementsByTagName('img')[0];
	var small_imgs = document.getElementById("small-img").getElementsByTagName('img');
	if(!_this){
		for(i=0;i<small_imgs.length;i++){
			if(document.all && navigator.userAgent.indexOf('Opera')<0) small_imgs[i].setAttribute("onclick",function(){gallery(this)});
			else small_imgs[i].setAttribute("onclick","gallery(this)");
			if(i == 0){
				setOpacity(small_imgs[i],2);
				small_imgs[i].style.cursor = "default";
			}
		}
	}else{
		for(i=0;i < small_imgs.length;i++){
			setOpacity(small_imgs[i],10);
			small_imgs[i].style.cursor = "pointer";
		}	
		setOpacity(_this,2);
		_this.style.cursor = "default";
		_src = _this.src.substring(0,_this.src.indexOf("small"));
		_src += "big";
		_src += _this.src.substring(_this.src.length-6,_this.src.length);
		big_img.src = _src;
	}
}