// JavaScript Document

// ロールオーバー
function initRollOverImages() {
  var image_cache = new Object();
  $("img.rover").each(function(i) {
    var imgsrc = this.src;
    var dot = this.src.lastIndexOf('.');
    var imgsrc_ro = this.src.substr(0, dot) + '_on' + this.src.substr(dot, 4);
    image_cache[this.src] = new Image();
    image_cache[this.src].src = imgsrc_ro;
    $(this).hover(
      function() { this.src = imgsrc_ro; },
      function() { this.src = imgsrc; });
  });
	fontSizeInit();
}

$(document).ready(initRollOverImages);


//グローバルナビゲーションアクティブ化
function navigation_Active(id){
	
	var target_img = "img#"+id;	
	$(target_img).each(function(i) {								
								
		var dot = this.src.lastIndexOf('.');
    	var imgsrc_ro = this.src.substr(0, dot) + '_on' + this.src.substr(dot, 4);
		this.src = imgsrc_ro;
		
		//既に割り当てられているロールオーバー関数を上書き
		$(this).hover(
		  function() { this.src = imgsrc_ro; },
		  function() { this.src = imgsrc_ro; });
		
	});
	
}

/*FontSize
****************************************************
*/

function fontSizeInit(){
	
	var currentstyle = readCookie('fontStyle');
	if(!currentstyle){
		currentstyle = "fontM";
	}
	if (currentstyle){
		switchFont(currentstyle);
			switch(currentstyle){
			case"fontL":
			current_img("sizeL");
			break;
			case"fontM":
			current_img("sizeM");
			break;
		}
	};
	$("#sizeL").click(function(){
		switchFont("fontL");
		if($(this).attr("className")!="active"){
			$(this).addClass("active");
			$("#sizeM").removeClass("active");
			$("#sizeM").attr("src",$("#sizeM").attr("src").replace("_on.", "."));
			current_img("sizeL");
		}
		return false;
	});
	$("#sizeM").click(function(){
		switchFont("fontM");
		if($(this).attr("className")!="active"){
			$(this).addClass("active");
			$("#sizeL").removeClass("active");
			$("#sizeL").attr("src",$("#sizeL").attr("src").replace("_on.", "."));
			current_img("sizeM");
		}
		return false;
	});
}


function switchFont(className){
	$("body").removeClass("fontM");
	$("body").removeClass("fontL");
	$("body").addClass(className);
	//setStyle(className);
	createCookie('fontStyle', className, 365);
}


/*
*	cookie script http://www.quirksmode.org/js/cookies.html
*/
function createCookie(name,value,days){
   if (days){
   var date = new Date();
   date.setTime(date.getTime()+(days*24*60*60*1000));
   var expires = "; expires="+date.toGMTString();
   }
   else var expires = "";
   document.cookie = name+"="+value+expires+"; path=/";
}


function readCookie(name){
   var nameEQ = name + "=";
   var ca = document.cookie.split(';');
   for(var i=0;i < ca.length;i++)
   {
   var c = ca[i];
   while (c.charAt(0)==' ') c = c.substring(1,c.length);
   if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
   }
   return null;
}

function current_img(str){
	var id="#"+str;
	var originalSrc = $(id).attr('src');
	if(originalSrc){
		var onSrc = originalSrc.replace(/(\.gif|\.jpg|\.png)/, "_on$1");
		$(id).attr('src',onSrc);
		$(id).addClass("active");
	}
}