var currentStyleSheet = "default";

window.onload = function() {
	useStyleAgain("mivoice_style");
}

window.onunload = function() {
	rememberStyle("mivoice_style");
}



function getAllSheets() {
	if( !window.ScriptEngine && navigator.__ice_version ) { return document.styleSheets; }
	if( document.getElementsByTagName ) { var Lt = document.getElementsByTagName('link'), St = document.getElementsByTagName('style');
	} else if( document.styleSheets && document.all ) { var Lt = document.all.tags('LINK'), St = document.all.tags('STYLE');
	} else { return []; } for( var x = 0, os = []; Lt[x]; x++ ) {
		var rel = Lt[x].rel ? Lt[x].rel : Lt[x].getAttribute ? Lt[x].getAttribute('rel') : '';
		if( typeof( rel ) == 'string' && rel.toLowerCase().indexOf('style') + 1 ) { os[os.length] = Lt[x]; }
	} for( var x = 0; St[x]; x++ ) { os[os.length] = St[x]; } return os;
}
function changeStyle() {
	window.userHasChosen = window.MWJss;
	for( var x = 0, ss = getAllSheets(); ss[x]; x++ ) {
		if( ss[x].title ) { ss[x].disabled = true; }
		for( var y = 0; y < arguments.length; y++ ) { if( ss[x].title == arguments[y] ) { ss[x].disabled = false; } }
} }
function rememberStyle( cookieName, cookieLife ) {
	for( var viewUsed = false, ss = getAllSheets(), x = 0; window.MWJss && MWJss[x] && ss[x]; x++ ) { if( ss[x].disabled != MWJss[x] ) { viewUsed = true; break; } }
	if( !window.userHasChosen && !viewUsed ) { return; }
	for( var x = 0, outLine = '', doneYet = []; ss[x]; x++ ) {
		if( ss[x].title && ss[x].disabled == false && !doneYet[ss[x].title] ) { doneYet[ss[x].title] = true; outLine += ( outLine ? ' MWJ ' : '' ) + escape( ss[x].title ); } }
	if( ss.length ) { document.cookie = escape( cookieName ) + '=' + escape( outLine ) + ( cookieLife ? ';expires=' + new Date( ( new Date() ).getTime() + ( cookieLife * 86400000 ) ).toGMTString() : '' ) + ';path=/'; }
}
function useStyleAgain( cookieName ) {
	for( var x = 0; x < document.cookie.split( "; " ).length; x++ ) {
		var oneCookie = document.cookie.split( "; " )[x].split( "=" );
		if( oneCookie[0] == escape( cookieName ) ) {
			var styleStrings = unescape( oneCookie[1] ).split( " MWJ " );
			for( var y = 0, funcStr = ''; styleStrings[y]; y++ ) { funcStr += ( y ? ',' : '' ) + 'unescape( styleStrings[' + y + '] )'; }
			eval( 'changeStyle(' + funcStr + ');' ); break;
	} } window.MWJss = []; for( var ss = getAllSheets(), x = 0; ss[x]; x++ ) { MWJss[x] = ss[x].disabled; }
}

function toggleStyleSheet(){
	if (currentStyleSheet == "default") {
		changeStyle("textonly");
		currentStyleSheet = "textonly"
	} else {
		changeStyle("default");
		currentStyleSheet = "default"
	}
}

var tgs = new Array( 'div','td','tr');
var szs = new Array( 'xx-small','x-small','small','medium','large','x-large','xx-large' );
var startSz = 2;

function ts( trgt,inc ){
	if (!document.getElementById) return
	var d = document,cEl = null,sz = startSz,i,j,cTags;
	
	sz += inc;
	if ( sz < 0 ) sz = 0;
	if ( sz > 4 ) sz = 4;
	startSz = sz;
		
	if ( !( cEl = d.getElementById( trgt ) ) ) cEl = d.getElementsByTagName( trgt )[ 0 ];

	cEl.style.fontSize = szs[ sz ];

	for ( i = 0 ; i < tgs.length ; i++ ) {
		cTags = cEl.getElementsByTagName( tgs[ i ] );
		for ( j = 0 ; j < cTags.length ; j++ ) cTags[ j ].style.fontSize = szs[ sz ];
	}
}

function incTextSize() {
	ts("content", 1);	
}

function decTextSize() {
	ts("content", -1)
}

var _POPUP_FEATURES = 'location=1, statusbar=1, menubar=1, scrollbars=1, toolbar=1, resizable=1, width=800, height=600';

function raw_popup(url, target, features) {
    if (isUndefined(features)) features = _POPUP_FEATURES;
    if (isUndefined(target  )) target   = '_blank';
    var theWindow = window.open(url, target, features);
    theWindow.focus();
    return theWindow;
}

function link_popup(src, features) {
    return raw_popup(src.getAttribute('href'), src.getAttribute('target') || '_blank', features);
}

function isUndefined(v) {
    var undef;
    return v===undef;
}