// hasegawahiroshi.jp

// ref: http://web-graphics.com/mtarchive/001659.php

function backToTop() {
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	var y1 = y2 = y3 = 0;
	if (document.documentElement) {
		x1 = document.documentElement.scrollLeft || 0;
		y1 = document.documentElement.scrollTop || 0;
	}
	if (document.body) {
		x2 = document.body.scrollLeft || 0;
		y2 = document.body.scrollTop || 0;
	}
	x3 = window.scrollX || 0;
	y3 = window.scrollY || 0;
	var x = Math.max(x1, Math.max(x2, x3));
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	window.scrollTo(Math.floor(x / 2), Math.floor(y / 2));
	if (x > 0 || y > 0) {
		window.setTimeout("backToTop()", 25);
	}
}

function search_box(){
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		document.search.style.color='#333';
		document.search.style.background='#fff';
	}
}

function backtotopLinks() {
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	pu.each( 
		function (item) { 
			Element.update(item, '<a href="javascript:;" onclick="backToTop();">PAGE UP</a>');
		} 
	); 
}
Event.observe(window,'load', backtotopLinks, false);

function externalLinks() {
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	}
}
/* window.onload=externalLinks; */
Event.observe(window,'load', externalLinks, false);

