// JavaScript Document
Event.observe(window, 'load', function() {
	pimage_resize(".imgPosition img",80,80)
});
// 图片缩放
function pimage_resize(condi,d_w,d_h)
{
    if (typeof(d_h) == "undefined" )
	{
		var d_h = 80;
	}
    if (typeof(d_w) == "undefined" )
	{
		var d_w = 80;
	}
    if (typeof(condi) == "undefined" )
	{
		var condi = 'img[ptype=photo]';
	}
	$$(condi).each(function(e){
		var o_h = e.height;
		var o_w = e.width;
		if (o_h > d_h || o_w > d_w )
		{
			var percent = get_percent(o_h,o_w,d_h,d_w);
			e.height = o_h * percent;
			e.width = o_w * percent;
		}
	});
}
// 获得图片比例
function get_percent(o_h,o_w,d_h,d_w)
{
	var percent = 1;
	if (o_h / o_w >= d_h / d_w)
	{
		percent = d_h / o_h;
	}
	else
	{
		percent = d_w / o_w;
	}
	return percent;
}