var local = "http://www.courts.go.jp";

function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}

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 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 setActiveImage(title,flg){
	if(flg==1){
		eng="_e";
		alt_txt= Array("Text size","fonts small","fonts middle","fonts big");
		bt_arr = Array(4,5,6);
	} else {
		eng="";
		alt_txt= Array("文字サイズ調整","文字サイズ 小","文字サイズ 中","文字サイズ 大");
		bt_arr = Array(1,2,3);
	}
	if(title=="btxt"){
		document.write(alt_txt[0]+' <a href="javascript: void(0);" onclick="chimg('+bt_arr[0]+');setActiveStyleSheet(\'stxt\'); return false;" onkeypress="chimg('+bt_arr[0]+');setActiveStyleSheet(\'stxt\'); return false;" title="'+alt_txt[0]+'"><img src="'+local+'/common/img/small_fonts'+eng+'.gif" alt="'+alt_txt[0]+'" name="fontchimg1" width="19" height="19" border="0" align="absmiddle" /></a> <a href="javascript: void(0);" onclick="chimg('+bt_arr[1]+');setActiveStyleSheet(\'mtxt\'); return false;" onkeypress="chimg('+bt_arr[1]+');setActiveStyleSheet(\'mtxt\'); return false;" title="'+alt_txt[2]+'"><img src="'+local+'/common/img/middle_fonts'+eng+'.gif" alt="'+alt_txt[2]+'" name="fontchimg2" width="19" height="19" border="0" align="absmiddle" /></a> <a href="javascript: void(0);" onclick="chimg('+bt_arr[2]+');setActiveStyleSheet(\'btxt\'); return false;" onkeypress="chimg('+bt_arr[2]+');setActiveStyleSheet(\'btxt\'); return false;" title="'+alt_txt[3]+'"><img src="'+local+'/common/img/on_big_fonts'+eng+'.gif" alt="'+alt_txt[3]+'" name="fontchimg3" width="19" height="19" border="0" align="absmiddle" /></a>');
	} else if(title=="mtxt"){
		document.write(alt_txt[0]+' <a href="javascript: void(0);" onclick="chimg('+bt_arr[0]+');setActiveStyleSheet(\'stxt\'); return false;" onkeypress="chimg('+bt_arr[0]+');setActiveStyleSheet(\'stxt\'); return false;" title="'+alt_txt[0]+'"><img src="'+local+'/common/img/small_fonts'+eng+'.gif" alt="'+alt_txt[0]+'" name="fontchimg1" width="19" height="19" border="0" align="absmiddle" /></a> <a href="javascript: void(0);" onclick="chimg('+bt_arr[1]+');setActiveStyleSheet(\'mtxt\'); return false;" onkeypress="chimg('+bt_arr[1]+');setActiveStyleSheet(\'mtxt\'); return false;" title="'+alt_txt[2]+'"><img src="'+local+'/common/img/on_middle_fonts'+eng+'.gif" alt="'+alt_txt[2]+'" name="fontchimg2" width="19" height="19" border="0" align="absmiddle" /></a> <a href="javascript: void(0);" onclick="chimg('+bt_arr[2]+');setActiveStyleSheet(\'btxt\'); return false;" onkeypress="chimg('+bt_arr[2]+');setActiveStyleSheet(\'btxt\'); return false;" title="'+alt_txt[3]+'"><img src="'+local+'/common/img/big_fonts'+eng+'.gif" alt="'+alt_txt[3]+'" name="fontchimg3" width="19" height="19" border="0" align="absmiddle" /></a>');
	} else if(title=="stxt"){
		document.write(alt_txt[0]+' <a href="javascript: void(0);" onclick="chimg('+bt_arr[0]+');setActiveStyleSheet(\'stxt\'); return false;" onkeypress="chimg('+bt_arr[0]+');setActiveStyleSheet(\'stxt\'); return false;" title="'+alt_txt[0]+'"><img src="'+local+'/common/img/on_small_fonts'+eng+'.gif" alt='+alt_txt[0]+'" name="fontchimg1" width="19" height="19" border="0" align="absmiddle" /></a> <a href="javascript: void(0);" onclick="chimg('+bt_arr[1]+');setActiveStyleSheet(\'mtxt\'); return false;" onkeypress="chimg('+bt_arr[1]+');setActiveStyleSheet(\'mtxt\'); return false;" title="'+alt_txt[2]+'"><img src="'+local+'/common/img/middle_fonts'+eng+'.gif" alt="'+alt_txt[2]+'" name="fontchimg2" width="19" height="19" border="0" align="absmiddle" /></a> <a href="javascript: void(0);" onclick="chimg('+bt_arr[2]+');setActiveStyleSheet(\'btxt\'); return false;" onkeypress="chimg('+bt_arr[2]+');setActiveStyleSheet(\'btxt\'); return false;" title="'+alt_txt[3]+'"><img src="'+local+'/common/img/big_fonts'+eng+'.gif" alt="'+alt_txt[3]+'" name="fontchimg3" width="19" height="19" border="0" align="absmiddle" /></a>');
	} else {
		document.write(alt_txt[0]+' <a href="javascript: void(0);" onclick="chimg('+bt_arr[0]+');setActiveStyleSheet(\'stxt\'); return false;" onkeypress="chimg('+bt_arr[0]+');setActiveStyleSheet(\'stxt\'); return false;" title="'+alt_txt[0]+'"><img src="'+local+'/common/img/small_fonts'+eng+'.gif" alt="'+alt_txt[0]+'" name="fontchimg1" width="19" height="19" border="0" align="absmiddle" /></a> <a href="javascript: void(0);" onclick="chimg('+bt_arr[1]+');setActiveStyleSheet(\'mtxt\'); return false;" onkeypress="chimg('+bt_arr[1]+');setActiveStyleSheet(\'mtxt\'); return false;" title="'+alt_txt[2]+'"><img src="'+local+'/common/img/on_middle_fonts'+eng+'.gif" alt="'+alt_txt[2]+'" name="fontchimg2" width="19" height="19" border="0" align="absmiddle" /></a> <a href="javascript: void(0);" onclick="chimg('+bt_arr[2]+');setActiveStyleSheet(\'btxt\'); return false;" onkeypress="chimg('+bt_arr[2]+');setActiveStyleSheet(\'btxt\'); return false;" title="'+alt_txt[3]+'"><img src="'+local+'/common/img/big_fonts'+eng+'.gif" alt="'+alt_txt[3]+'" name="fontchimg3" width="19" height="19" border="0" align="absmiddle" /></a>');
	}
}

function chimg(flg){
	if(flg==1){
		document.images['fontchimg1'].src = img[0].src;document.images['fontchimg2'].src = img[3].src;document.images['fontchimg3'].src = img[5].src;
	} else if(flg==4){
		document.images['fontchimg1'].src = img[6].src;document.images['fontchimg2'].src = img[9].src;document.images['fontchimg3'].src = img[11].src;
	} else if(flg==2){
		document.images['fontchimg1'].src = img[1].src;document.images['fontchimg2'].src = img[2].src;document.images['fontchimg3'].src = img[5].src;
	} else if(flg==5){
		document.images['fontchimg1'].src = img[7].src;document.images['fontchimg2'].src = img[8].src;document.images['fontchimg3'].src = img[11].src;
	} else if(flg==3){
		document.images['fontchimg1'].src = img[1].src;document.images['fontchimg2'].src = img[3].src;document.images['fontchimg3'].src = img[4].src;
	} else if(flg==6){
		document.images['fontchimg1'].src = img[7].src;document.images['fontchimg2'].src = img[9].src;document.images['fontchimg3'].src = img[10].src;
	}
}

window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
	
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}


var img = new Array();
img[0] = new Image();img[0].src = local+"/common/img/on_small_fonts.gif";
img[1] = new Image();img[1].src = local+"/common/img/small_fonts.gif";
img[2] = new Image();img[2].src = local+"/common/img/on_middle_fonts.gif";
img[3] = new Image();img[3].src = local+"/common/img/middle_fonts.gif";
img[4] = new Image();img[4].src = local+"/common/img/on_big_fonts.gif";
img[5] = new Image();img[5].src = local+"/common/img/big_fonts.gif";
img[6] = new Image();img[6].src = local+"/common/img/on_small_fonts_e.gif";
img[7] = new Image();img[7].src = local+"/common/img/small_fonts_e.gif";
img[8] = new Image();img[8].src = local+"/common/img/on_middle_fonts_e.gif";
img[9] = new Image();img[9].src = local+"/common/img/middle_fonts_e.gif";
img[10] = new Image();img[10].src = local+"/common/img/on_big_fonts_e.gif";
img[11] = new Image();img[11].src = local+"/common/img/big_fonts_e.gif";
//
var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);