//\/////

//\  overLIB Fade In/Out Plugin

//\

//\  You may not remove or change this notice.

//\  Copyright Erik Bosrup 1998-2003. All rights reserved.

//\  Contributors are listed on the homepage.

//\  See http://www.bosrup.com/web/overlib/ for details.

//\/////

////////

// PRE-INIT

// Ignore these lines, configuration is below.

////////

if (typeof olInfo == 'undefined' || typeof olInfo.meets == 'undefined' || !olInfo.meets(4.14)) alert('overLIB 4.14 or later is required for the Fade In/Out Plugin.');

else {

registerCommands('fadein,fadeout,fadetime,opacity');

////////

// DEFAULT CONFIGURATION

// Settings you want everywhere are set here. All of this can also be

// changed on your html page or through an overLIB call.

////////

if (typeof ol_fadein=='undefined') var ol_fadein=0;

if (typeof ol_fadeout=='undefined') var ol_fadeout=0;

if (typeof ol_fadetime=='undefined') var  ol_fadetime=500;  // 0.5 sec fade time

if (typeof ol_opacity=='undefined') var ol_opacity=100;

////////

// END OF CONFIGURATION

// Don't change anything below this line, all configuration is above.

////////

////////

// INIT

////////

// Runtime variables init. Don't change for config!

var o3_fadein=0;

var o3_fadeout=0;

var o3_fadetime=500;

var o3_opacity=100;

var o3_fadeInc, o3_fadeTimeInc, o3_fadeid,o3_fadeOpacity;

////////

// PLUGIN FUNCTIONS

////////

function setFadeVariables() {

	o3_fadein=ol_fadein;

	o3_fadeout=ol_fadeout;

	o3_fadetime=ol_fadetime;

	o3_opacity=ol_opacity;

	o3_fadeid=0;

}

// Parses Fade commands

function parseFadeExtras(pf,i,ar) {

	var k=i,v;

	if (k < ar.length) {

		if (ar[k]==FADEIN) { eval(pf +'fadein=('+pf+'fadein==0) ? 1 : 0'); return k; }

		if (ar[k]==FADEOUT) { eval(pf +'fadeout=('+pf+'fadeout==0) ? 1 : 0'); return k; }

		if (ar[k]==FADETIME) { eval(pf+'fadetime='+ar[++k]); return k; }

		if (ar[k]==OPACITY) { eval(pf+'opacity=setOpacity('+ar[++k]+')'); return k; }

	}

	return -1;

}

// Makes sure opacity doesn't exceed 100%

function setOpacity(op) {

	if (op<0) op *= -1;

	return (op < 1 ? Math.round(100*op) : (op>100 ? 100 : Math.round(op)))

}

//////

// POST PARSE CHECKS

//////

function chkFadeParams() {

	var sgn;

	if(o3_fadein||o3_fadeout||(o3_opacity!=100)) {

		if(olNs4||(olIe4&&isMac)) o3_fadein=o3_fadeout=o3_fadeid=0;

		else if(o3_fadein||o3_fadeout) {

			if(o3_fadeout&&o3_sticky) o3_fadeout=0;

			var numSteps=(document.all ? 10 : 20);

			if(o3_fadein&&o3_fadeout) o3_fadeout=0;

			o3_fadeInc = o3_opacity/numSteps;

			sgn = (o3_fadein) ? 1 : -1;

			o3_fadeInc *= sgn;

			o3_fadeOpacity=(o3_fadein ? 0 : o3_opacity);

			o3_fadeTimeInc=parseInt(o3_fadetime/numSteps);

		}

	}

	return true;

}

//////

//  OVER-RIDE CORE FUNCTION

//////

function nd(time) {

	if(olLoaded&&!isExclusive()) {

		if(o3_fadeout&&!o3_delay) {

			if (o3_timerid > 0) clearTimeout(o3_timerid);

			if(time) o3_timerid=setTimeout("o3_fadeid=setInterval('doFadeOut()',"+o3_fadeTimeInc+")",time);

			else o3_fadeid=setInterval('doFadeOut()',o3_fadeTimeInc);

		} else {

			if (time&&!o3_delay) {

				if (o3_timerid > 0) clearTimeout(o3_timerid);

				o3_timerid=setTimeout("cClick()",(o3_timeout=time));

			}

			if ( o3_removecounter >= 1 ) { o3_showingsticky=0 };

			if ( o3_showingsticky==0 ) {

				o3_allowmove=0;

				if (over!=null&&(o3_compatmode ? 1 : o3_timerid==0)) runHook("hideObject",FREPLACE,over);

			} else o3_removecounter++;

		}

	}

	return true;

}

//////

// FADE FUNCTION

//////

function doFadeOut() {

	if(o3_fadeOpacity<0) {

		clearInterval(o3_fadeid);

		o3_fadeid=0;

		runHook('hideObject',FREPLACE, over);

		o3_allowmove=0;

	} else {

		setPUOpacity(o3_fadeOpacity);

		o3_fadeOpacity += o3_fadeInc;

	}

}

function doFadeIn() {

	if (o3_fadein) {

		if(o3_fadeOpacity>o3_opacity) {

			clearTimeout(o3_fadeid);

			o3_fadeid=0;

		} else {

			setPUOpacity(o3_fadeOpacity);

			o3_fadeOpacity += o3_fadeInc;

			o3_fadeid=setTimeout("doFadeIn()",o3_fadeTimeInc);

		}

	}

}

function setPUOpacity(op){

	if (olNs4) return;

	op = (typeof op=='number') ? op : (o3_fadein ? o3_fadeOpacity : o3_opacity);

	setBrowserOpacity(op);

}

function cleanUpPUOpacity() {

	if (olNs4) return;

	if(o3_fadein&&o3_fadeid) clearTimeout(o3_fadeid);

	o3_fadein = 0;

	cleanUpBrowserOpacity();

}

// multi browser support for opacity

function setBrowserOpacity(op,lyr){

	if (olNs4||!op) return;  // if Ns4.x or opacity not given return;

	lyr=(lyr) ? lyr : over;

	if (olIe4&&typeof lyr.filters != 'undefined') {

		lyr.style.filter='Alpha(Opacity='+op+')';

		lyr.filters.alpha.enabled=true;

	} else {

		var sOp=(typeof(lyr.style.MozOpacity)!='undefined') ? 'MozOpacity' : (typeof(lyr.style.KhtmlOpacity)!='undefined' ? 'KhtmlOpacity' : (typeof(lyr.style.opacity)!='undefined' ? 'opacity' : '')); 

		if (sOp) eval('lyr.style.'+sOp+'=op/100');

	}

}

function cleanUpBrowserOpacity(lyr) {

	if (olNs4) return;

	lyr=(lyr) ? lyr : over;

	if (olIe4&&typeof lyr.filters != 'undefined') {

		lyr.style.filter='Alpha(Opacity=100)';

		lyr.filters.alpha.enabled=false;

	} else {

		var sOp=(typeof(lyr.style.MozOpacity)!='undefined') ? 'MozOpacity' : (typeof(lyr.style.KhtmlOpacity)!='undefined' ? 'KhtmlOpacity' : (typeof(lyr.style.opacity)!='undefined' ? 'opacity' : '')); 

		if (sOp) eval('lyr.style.'+sOp+'=1.0');

	}

}

////////

// PLUGIN REGISTRATIONS

////////

registerRunTimeFunction(setFadeVariables);

registerCmdLineFunction(parseFadeExtras);

registerPostParseFunction(chkFadeParams);

registerHook("disp",doFadeIn,FBEFORE);

registerHook("showObject",setPUOpacity,FBEFORE);

registerHook('hideObject',cleanUpPUOpacity,FAFTER);

if (olInfo.meets(4.14)) registerNoParameterCommands('fadein,fadeout');

}

//end