/*

 Author : http://www.yomotsu.net

 Licensed under the GNU Lesser General Public License version 2.1

*/



/* ie png

----------------------------------------*/



function yomotsuIePng(){

	if (document.all && !window.opera && !window.XMLHttpRequest && (typeof document.getElementsByTagName("body")[0].style.outline == "undefined"))/* IE+Opera - opera - ie7up - macIE */{

		for (var i = 0; i <document.getElementsByTagName("img").length; i++) { 

		

		if (document.getElementsByTagName("img")[i].getAttribute("src").lastIndexOf(".png") != -1){

			

			var pngSrc = document.getElementsByTagName("img")[i].getAttribute("src");

			var blankSrc = pngSrc.slice(0, pngSrc.lastIndexOf("/")+1) + "blank.gif";

			

			document.getElementsByTagName("img")[i].style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+pngSrc+"')";

			document.getElementsByTagName("img")[i].setAttribute("src",blankSrc);

			

			}

		}

	}

}



addEvent(window, 'load', yomotsuIePng);



/* rollover

----------------------------------------*/



function yomotsuRollover() {

	if (!document.getElementById) return

	

	var img = document.getElementsByTagName("img");

	

	for(i=0;i<img.length;i++){



		var src   = img[i].getAttribute("src");

		var ftype = src.substring(src.lastIndexOf("."), src.length);

		

		if(new RegExp("_n"+ ftype + "\\b").exec(src)) {

			

			img[i].onmouseover = function() {

				var curSrc   = this.getAttribute("src");

				var curFtype = curSrc.substring(curSrc.lastIndexOf("."), curSrc.length);

				this.setAttribute("src", curSrc.slice(0, -1*(curFtype.length + 2)) + "_r" + curFtype);

			}	

			

			img[i].onmouseout = function() {

				var curSrc   = this.getAttribute("src");

				var curFtype = curSrc.substring(curSrc.lastIndexOf("."), curSrc.length);

				this.setAttribute("src", curSrc.slice(0, -1*(curFtype.length + 2)) + "_n" + curFtype);

			}

			

		}

	}

	// input (type=image)

	var input = document.getElementsByTagName("input");

	

	for(i=0;i<input.length;i++){



		var src   = input[i].getAttribute("src");

		var ftype = src.substring(src.lastIndexOf("."), src.length);

		

		if(new RegExp("_n"+ ftype + "\\b").exec(src)) {

			

			input[i].onmouseover = function() {

				var curSrc   = this.getAttribute("src");

				var curFtype = curSrc.substring(curSrc.lastIndexOf("."), curSrc.length);

				this.setAttribute("src", curSrc.slice(0, -1*(curFtype.length + 2)) + "_r" + curFtype);

			}	

			

			input[i].onmouseout = function() {

				var curSrc   = this.getAttribute("src");

				var curFtype = curSrc.substring(curSrc.lastIndexOf("."), curSrc.length);

				this.setAttribute("src", curSrc.slice(0, -1*(curFtype.length + 2)) + "_n" + curFtype);

			}

			

		}

	}

}



addEvent(window, "load", yomotsuRollover);





/* clearDefaultValue

----------------------------------------*/

function yomotsuClearDefaultValue(){

	var input = document.getElementsByTagName("input");

	var textarea = document.getElementsByTagName("textarea");



	/* input */

	for (i=0;i<input.length;i++){

		if((input[i].getAttribute("type") == "text")||(input[i].getAttribute("type") == null)){

			if (input[i].value == input[i].defaultValue){

				input[i].className += " default-value"

			}

			input[i].onfocus = function(){

				if (this.value == this.defaultValue){

					this.value = "";

					this.className = this.className.replace(/ default-value/, "");

				}

			}

			input[i].onblur = function(){

				if (this.value == ""){

					this.value = this.defaultValue;

					this.className += " default-value"

				}

			}

		}

	}

	/* textarea */

	for (i=0;i<textarea.length;i++){

		if (textarea[i].value == textarea[i].defaultValue){

			textarea[i].className += " default-value"

		}

		textarea[i].onfocus = function(){

			if (this.value == this.defaultValue){

				this.value = "";

				this.className -= " default-value"

			}

		}

		textarea[i].onblur = function(){

			if (this.value == ""){

				this.value = this.defaultValue;

				this.className += " default-value"

			}

		}

	}	

}



addEvent(window, 'load', yomotsuClearDefaultValue);



/* backToTop

----------------------------------------*/



backToTopBootConf = {

	topFlag : "#document" //"y[W̐擪֖߂"href̒l

}



function yomotsuBackToTopBoot(){

	var a = document.getElementsByTagName("a");

	for(i=0;i<a .length;i++){

		if(new RegExp(backToTopBootConf.topFlag + "\\b").exec(a[i].getAttribute("href"))) {

			

			a[i].onclick = function(){

				this.removeAttribute("href")

				backToTop();

				this.setAttribute("href",backToTopBootConf.topFlag);

				return false;

			}

		}

	}

}





function backToTop() {

    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 / 1.3), Math.floor(y / 1.3));



    if (x > 0 || y > 0) {

        window.setTimeout("backToTop()", 25);

    }

    else {

				location.href = backToTopBootConf.topFlag;

    }

		

}



addEvent(window, 'load', yomotsuBackToTopBoot);





/* add event

----------------------------------------*/



function addEvent(obj, evType, fn){

	if (obj.addEventListener){

		obj.addEventListener(evType, fn, false);

		return true;

	}

	else if (obj.attachEvent){

		var r = obj.attachEvent("on"+evType, fn);

		return r;

	}

	else {

		return false;

	}

}