// 080102



/* user check */

// check browser name
function getBrwName() {
	var aName  = navigator.appName.toUpperCase();
	var uAgent = navigator.userAgent.toUpperCase();
	if (uAgent.indexOf('SAFARI') >= 0) { return 'SFR'; }
	else if (uAgent.indexOf('FIREFOX') >= 0) { return 'FFX'; }
	else if (uAgent.indexOf('OPERA') >= 0) { return 'OPR'; }
	else if (aName.indexOf('NETSCAPE') >= 0) { return 'NSC'; }
	else if (aName.indexOf('MICROSOFT') >= 0) { return 'IEX'; }
	else { return 'UBR'; }
}

// check browser version
function getBrwVersion() {
	var brwName = getBrwName();
	var brwVersion;
	var appVer  = navigator.appVersion;
	var uAgent  = navigator.userAgent.toUpperCase();
	switch(brwName) {
		case 'SFR':
			var extEnd = appVer.indexOf(' ',0);
			var extStr = appVer.substring(0,extEnd);
			var splStr = extStr.split('.');
			var brwVersInt = eval(splStr[0]) -4;
			var brwVarsDec = splStr[1];
			brwVersion = brwVersInt +'.' + brwVarsDec;
			break;
		case 'FFX':
			var extBase = uAgent.indexOf('FIREFOX',0);
			var extStart = uAgent.indexOf('/',extBase) +1;
			var extEnd = uAgent.length;
			brwVersion = uAgent.substring(extStart,extEnd);
			break;
		case 'OPR':
			var extBase = uAgent.indexOf('OPERA',0);
			var extStart = uAgent.indexOf(' ',extBase) +1;
			var extEnd = uAgent.indexOf(' ',extStart);
			brwVersion = uAgent.substring(extStart,extEnd);
			break;
		case 'NSC':
			var extEnd = appVer.indexOf(' ',0);
			var extStr = appVer.substring(0,extEnd);
			if (eval(extStr) >= 5) {
				var extStart = uAgent.lastIndexOf('/') +1;
				var extStr = uAgent.substring(extStart,uAgent.length);
				var splStr = extStr.split('.');
				brwVersion = splStr[0] + '.' + splStr[1];
			}
			else {
				brwVersion = extStr;
			}
			break;
		case 'IEX':
			var extBase = uAgent.indexOf('MSIE',0);
			var extStart = uAgent.indexOf(' ',extBase) +1;
			var extEnd = uAgent.indexOf(';',extStart);
			brwVersion = uAgent.substring(extStart,extEnd);
			break;
		case 'UBR':
			brwVersion = 'UVR';
			break;
	}
	return brwVersion;
}

// check OS
function getUsrOS() {
	var extStr = navigator.platform.toUpperCase();
	var aName  = navigator.appName.toUpperCase();
	var uAgent  = navigator.userAgent.toUpperCase();
	if (extStr.indexOf('MAC') >= 0) {
		if (aName.indexOf('MICROSOFT') >= 0) {
			var extBase = uAgent.indexOf('MSIE',0);
			var extStart = uAgent.indexOf(' ',extBase) +1;
			var extEnd = uAgent.indexOf(';',extStart);
			var brwVersion = uAgent.substring(extStart,extEnd);
			if (brwVersion >=5.2) {
				return 'MacOSX'; 
			}
			else {
				return 'MacOS9';
			}
		}
		else if (uAgent.indexOf('MAC OS X') >=0) {
			return 'MacOSX'; 
		}
		else {
			return 'MacOS9';
		}
	}
	else if (extStr.indexOf('WIN') >= 0) { return 'Windows'; }
	else { return 'UOS'; }
}

/* user check //*/



/* cookie */

// read cookie
function getCookie(kwd, tmpTxt_1, tmpTxt_2, xx1, xx2, xx3) {
	var tmpTxt_1 = ' ' + document.cookie + ';';
	var xx1 = 0;
	var xx2 = 0;
	var tgtLength = tmpTxt_1.length;
	while (xx1 < tgtLength) {
		xx2 = tmpTxt_1.indexOf(';', xx1);
		var tmpTxt_2 = tmpTxt_1.substring(xx1 + 1, xx2);
		var xx3 = tmpTxt_2.indexOf('=');
		if (tmpTxt_2.substring(0, xx3) == kwd) {
			return(unescape(tmpTxt_2.substring(xx3 + 1, xx2 - xx1 - 1)));
		}
		xx1 = xx2 + 1;
	}
	 return('');
}

// write cookie
function setCookie(kwd, val) {
	var tmp = kwd + '=' + val + ';path=/';
	document.cookie = tmp;
}

/* cookie //*/



/* contents name */

// return contents name (full)
function rtnCntFull() {
	var ttl = document.title;
	var sNum = ttl.indexOf('|') +2;
	var ttlLength = ttl.length;
	var tgtLength = ttlLength - sNum;
	var cntTxt = ttl.substr(sNum,tgtLength);
	return cntTxt;
}

// return contents name (short)
function rtnCntShort() {
	var ttl = document.title;
	var sNum = ttl.indexOf('|') +2;
	var ttlLength = ttl.length;
	var tgtLength = ttlLength - sNum;
	var cntTxt = ttl.substr(sNum,tgtLength);
	var nCnt;
	switch(cntTxt) {
		case'top':
			nCnt = 'top';
			break;
		case 'news':
			nCnt = 'nws';
			break;
		case 'biography':
			nCnt = 'bio';
			break;
		case 'discography':
			nCnt = 'dsc';
			break;
		case 'diary':
			nCnt = 'dry';
			break;
		case 'mobile':
			nCnt = 'mbl';
			break;
		case 'mail magazine':
			nCnt = 'mmg';
			break;
		case 'instruction':
			nCnt = 'ins';
			break;
	}
	return nCnt;
}

// exchange contents name
function exchangeCntShort(id) {
	var cntName;
	switch(id) {
		case'top':
			cntName = 'top';
			break;
		case 'nws':
			cntName = 'news';
			break;
		case 'bio':
			cntName = 'biography';
			break;
		case 'dsc':
			cntName = 'discography';
			break;
		case 'dry':
			cntName = 'diary';
			break;
		case 'mbl':
			cntName = 'mobile';
			break;
		case 'mmg':
			cntName = 'mail magazine';
			break;
		case 'ins':
			cntName = 'instruction';
			break;
	}
	return cntName;
}

/* contents name //*/



/* directories */
 
// directory check
function chkDir() {
	var nLct = location.href;
	var firstDotPos = nLct.indexOf('m');
	var firstSlashPos = nLct.indexOf('/',firstDotPos);
	var slashNum = 0;
	var tgtPos = firstSlashPos+1;
	var i;
	for(i ; i != -1 ; i = tgtPos) {
		tgtPos = nLct.indexOf('/',tgtPos+1);
		slashNum = slashNum+1;
	}
	return slashNum;
}

// extend directory
function extDir(tgtDir) {
	var nDir = chkDir();
	var extDir;
	if (chkDir() == 1) {
		extDir = tgtDir;
	}
	else {
		var tgtStr = '../';
		var rptTime = chkDir()-1;
		var i;
		var rptTgtStr = '';
		for (i=1; i <= rptTime; i++) {
			rptTgtStr = rptTgtStr + tgtStr;
			extDir = rptTgtStr + tgtDir;
		}
	}
	return extDir;
}

/* directories //*/



/* images&btn actions */

// goto URL
function goToURL() {
  var i, args=goToURL.arguments; document.returnValue = false;
  for (i=0; i<(args.length-1); i+=2) eval(args[i]+".location='"+args[i+1]+"'");
}

// change location
function chgLct(tgtUrl) {
	window.location.href=tgtUrl;
}

// open new window
function openNewWin(tgtUrl) {
	window.open(tgtUrl,'newWin','toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes');
}

// open new window w/window size
function openNewWinWsize(tgtUrl,wName,tgtWidth,tgtHeight) {
	var functions = ''
		+ "'toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, width="
		+ tgtWidth
		+ ', height='
		+ tgtHeight
		+ "'"
		;
	window.open(tgtUrl,wName,functions);
}

// images preloader
function preloadImages() {
	var d=document;
	if(d.images){
		if(!d.ex_p) d.ex_p = new Array();
		var i,j=d.ex_p.length,a = preloadImages.arguments;
		for(i=0; i<a.length; i++)
		if (a[i].indexOf("#")!=0) {
			d.ex_p[j]=new Image;
			d.ex_p[j++].src=a[i];
		}
	}
}

// swap image restore
function swapImgRestore() {
	var i,x,a=document.ex_sr;
	for (i=0; a&&i<a.length&&(x=a[i])&&x.oSrc; i++) x.src=x.oSrc;
}

// find tgt object
function findObj(n, d) {
	var p,i,x;
		if(!d) d=document;
		if ((p=n.indexOf("?"))>0&&parent.frames.length) {
			d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);
		}
		if (!(x=d[n])&&d.all) x=d.all[n];
		for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
		for (i=0;!x&&d.layers&&i<d.layers.length;i++) x=findObj(n,d.layers[i].document);
		if (!x && d.getElementById) x=d.getElementById(n);
		return x;
}

// swap image
function swapImage() {
	var i,j=0,x,a=swapImage.arguments;
	document.ex_sr=new Array;
	for (i=0;i<(a.length-2);i+=3)
	if ((x=findObj(a[i]))!=null) {
		document.ex_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];
	}
}

// change color config
function chgClrConfig(tgtConfig) {
	var clrConfig = getCookie('clrConfig');
	if(tgtConfig != clrConfig) {
		setCookie('clrConfig', tgtConfig);
		window.location.reload();
	}
}

// reload
function reloadWin() {
	window.location.reload();
}

// images DL jammar 
function jamClk() {
	alert('画像のコピー・転載はご遠慮下さい。\nDo not duplicate or redistribute this image in any form, without permission.');
}

/* images&btn actions //*/



/* color config */

// initialize color config on 1st load w/randomizer
function initClrConfig() {
	var clrConfig = getCookie('clrConfig');
	if (clrConfig == '') {
		var xNum = Math.floor((Math.random()*2)+1);
		var tgtNum;
		if (xNum < 10) {
			tgtNum = '0' + xNum;
		}
		else {
			tgtNum = xNum;
		}
		clrConfig = tgtNum;
		setCookie('clrConfig', clrConfig);
	}
}

// clr setting
function setClrConfig() {
	var wStr_elm_01 = '<link rel="stylesheet" href="';
	var wStr_elm_02 = extDir('css/clrcfg_');
	var clrConfig = getCookie('clrConfig');
	var wStr_elm_03 = '.css" type="text/css" media="screen,tv" />';
	var wStr = wStr_elm_01 + wStr_elm_02 + clrConfig + wStr_elm_03;
	if (clrConfig != '01') {
		document.write(wStr);
		document.close();
	}
}

/* color config //*/



/* copyright automation */

function cpWrite() {
	var nYear = '2009'; // set year
	var wStr_elm_01= 'Copyright ';
	var wStr_elm_02= ' megrock.com All rights reserved.';
	var wStr_elm_03= '<br />No reproduction republication without written permission.';
	var wStr = wStr_elm_01 + nYear + wStr_elm_02 + wStr_elm_03;
	document.write(wStr);
	document.close();
}

/* copyright automation //*/



/* text config */

// set txt config
function setTxtConfig() {
	var usrOS = getUsrOS();
	var brwName = getBrwName();
	var wStr_elm_01 = '<link rel="stylesheet" href="';
	var wStr_elm_02 = extDir('css/');
	var wStr_elm_03;
	switch(usrOS) {
		case 'MacOSX':
			wStr_elm_03 = 'm';
			break;
		case 'MacOS9':
			wStr_elm_03 = 'm';
			break;
		case 'Windows':
			wStr_elm_03 = 'w';
			break;
	}
	var wStr_elm_04 = '_';
	var wStr_elm_05 = brwName.toLowerCase();
	var wStr_elm_06 = '.css" type="text/css" media="screen,tv" />'
	var wStr = wStr_elm_01 + wStr_elm_02 + wStr_elm_03 + wStr_elm_04 + wStr_elm_05 + wStr_elm_06;
	document.write(wStr);
	document.close();
}

/* text config //*/