function alphaImage(){
	//透明Gifを置いてあるパス
	fakeImagePath ="images/fake.gif";
	
	user_agent = navigator.userAgent;
	if(user_agent.search("MSIE 6.0","i") > 0){

	var node_img = document.getElementsByTagName('img');
	for (var i in node_img) {
	if (node_img[i].className == "alpha") {
		imgSourse = node_img[i].src;
		node_img[i].style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+imgSourse+"',sizingMethod='scale');";
		node_img[i].src = fakeImagePath;
	}
	}
	
	}
}

// JavaScript Documents/