/*
-------------------------------------------------
takumadesign Common Script
Author:   Takuma Nishiyama
Version:  2007-10-27
------------------------------------------------- */

/* Side Search
------------------------------------------------- */
function sideSearch() {
	var sb = document.getElementById("search");
	sb.defVal = "検索";
	
	if (sb.value == sb.defVal) {
		sb.className = "default";
	}
	
	sb.onfocus = function() {
		this.className = "focus";
		if (this.value == this.defVal) {
			this.value = "";
		}
	};
	
	sb.onblur = function() {
		this.className = "txt";
		if (isempty(this.value)) {
			this.value = this.defVal;
			this.className = "default";
		}
	};
}

function isempty(val) {
	var x = /^\s*$/;
	return x.test(val);
}


/* Back 2 Top
------------------------------------------------- */
function back2top() {
	var b2t = document.getElementById("back2top").getElementsByTagName("a")[0];
	b2t.onclick = function() {
		scrollTop();
		return false;
	}
}

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


window.onload = function() {
	sideSearch();
	back2top();

}