function initRollOverImages() {
	var image_cache = new Object();
	$("img.swap").each(function(i) {
		var imgsrc = this.src;
		var dot = this.src.lastIndexOf('.');
		var imgsrc_on = this.src.substr(0, dot) + '_on' + this.src.substr(dot, 4);
		image_cache[this.src] = new Image();
		image_cache[this.src].src = imgsrc_on;
		$(this).hover(
			function() { this.src = imgsrc_on; },
			function() { this.src = imgsrc; });
	});
}

$(document).ready(initRollOverImages);



function look(image){
document.big.src=image;
}



function link(name){
var service = {fb : "http://www.facebook.com/sharer.php?u="};

if(service[name] != undefined){
location.href = service[name] + encodeURIComponent(location.href) + '&t=' + encodeURIComponent(document.title);
}else{
alert("不正な呼び出しです")
}
}