ECS = {
	getURL: function(asin, id){
		var url = 'http://www.amazon.co.jp/exec/obidos/ASIN/';
		url += asin + (id ? ('/' + id) : '') + '/ref=nosim/';
		
		return url;
	},
	getImageURL: function(asin, size, option){
		var url = 'http://images-jp.amazon.com/images/P/' + asin + '.09.';
		var opt = option ? option : '';
		switch (size.toLowerCase()){
			case 'thumb':
				return url + '_SCTHUMBZZZ_' + opt + '.jpg';
			case 'small':
			case 's':
				return url + '_SCTZZZZZZZ_' + opt + '.jpg';
			case 'medium':
			case 'm':
				return url + '_SCMZZZZZZZ_' + opt + '.jpg';
			case 'large':
			case 'l':
				return url + '_SCLZZZZZZZ_' + opt + '.jpg';
			default:
				return null;
		}
	},
	getNoImageURL: function(){
		return 'http://images-jp.amazon.com/images/G/09/x-locale/detail/thumb-no-image.gif';
	}
};


function setWindowStatus(element, str){
	Event.observe(element, 'mouseover', function(){window.status = str;return true;});
	Event.observe(element, 'mouseout', function(){window.status = '';});
	Event.observe(element, 'focus', function(){window.status = str;return true;});
}

/***** Cookie *****/

function setCookie (name, value, expires, path, domain, secure) {
    var curCookie = name + "=" + escape(value) + (expires ? "; expires=" + expires : "") + (path ? "; path=" + path : "") + (domain ? "; domain=" + domain : "") + (secure ? "secure" : "");
    document.cookie = curCookie;
}

function getCookie (name) {
    var prefix = name + '=';
    var c = document.cookie;
    var nullstring = '';
    var cookieStartIndex = c.indexOf(prefix);
    if (cookieStartIndex == -1)
        return nullstring;
    var cookieEndIndex = c.indexOf(";", cookieStartIndex + prefix.length);
    if (cookieEndIndex == -1)
        cookieEndIndex = c.length;
    return unescape(c.substring(cookieStartIndex + prefix.length, cookieEndIndex));
}

function deleteCookie (name, path, domain) {
    if (getCookie(name))
        document.cookie = name + "=" + ((path) ? "; path=" + path : "") + ((domain) ? "; domain=" + domain : "") + "; expires=Thu, 01-Jan-70 00:00:01 GMT";
}

function fixDate (date) {
    var base = new Date(0);
    var skew = base.getTime();
    if (skew > 0)
        date.setTime(date.getTime() - skew);
}

/***** W3CDTF *****/

Date.W3CDTF = function ( dtf ) {
    var dd = new Date();
    dd.setW3CDTF = Date.W3CDTF.prototype.setW3CDTF;
    dd.getW3CDTF = Date.W3CDTF.prototype.getW3CDTF;
    if ( dtf ) dd.setW3CDTF( dtf );
    return dd;
};

Date.W3CDTF.prototype.setW3CDTF = function( dtf ) {
    var sp = dtf.split( /[^0-9]/ );

    // invalid format
    if ( sp.length < 6 || sp.length > 8 ) return;

    // invalid time zone
    if ( sp.length == 7 ) {
        if ( dtf.charAt( dtf.length-1 ) != "Z" ) return;
    }

    // to numeric
    for( var i=0; i<sp.length; i++ ) sp[i] = sp[i]-0;

    // invalid range
    if ( sp[0] < 1970 ||                // year
         sp[1] < 1 || sp[1] > 12 ||     // month
         sp[2] < 1 || sp[2] > 31 ||     // day
         sp[3] < 0 || sp[3] > 23 ||     // hour
         sp[4] < 0 || sp[4] > 59 ||     // min
         sp[5] < 0 || sp[5] > 60 ) {    // sec
        return;                         // invalid date 
    }

    // get UTC milli-second
    var msec = Date.UTC( sp[0], sp[1]-1, sp[2], sp[3], sp[4], sp[5] );

    // time zene offset
    if ( sp.length == 8 ) {
        if ( dtf.indexOf("+") < 0 ) sp[6] *= -1;
        if ( sp[6] < -12 || sp[6] > 13 ) return;    // time zone offset hour
        if ( sp[7] < 0 || sp[7] > 59 ) return;      // time zone offset min
        msec -= (sp[6]*60+sp[7]) * 60000;
    }

    // set by milli-second;
    return this.setTime( msec );
};

Date.W3CDTF.prototype.getW3CDTF = function() {
    var year = this.getFullYear();
    var mon  = this.getMonth()+1;
    var day  = this.getDate();
    var hour = this.getHours();
    var min  = this.getMinutes();
    var sec  = this.getSeconds();

    // time zone
    var tzos = this.getTimezoneOffset();
    var tzpm = ( tzos > 0 ) ? "-" : "+";
    if ( tzos < 0 ) tzos *= -1;
    var tzhour = tzos / 60;
    var tzmin  = tzos % 60;

    // sprintf( "%02d", ... )
    if ( mon  < 10 ) mon  = "0"+mon;
    if ( day  < 10 ) day  = "0"+day;
    if ( hour < 10 ) hour = "0"+hour;
    if ( min  < 10 ) min  = "0"+min;
    if ( sec  < 10 ) sec  = "0"+sec;
    if ( tzhour < 10 ) tzhour = "0"+tzhour;
    if ( tzmin  < 10 ) tzmin  = "0"+tzmin;
    var dtf = year+"-"+mon+"-"+day+"T"+hour+":"+min+":"+sec+tzpm+tzhour+":"+tzmin;
    return dtf;
};