// JavaScript Document

//--------------------------------------------------------------------------------------------------
// Rollover-Effekt
function MM_swapImgRestore() { //v3.0
	var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
	var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
		var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
		if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
	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=MM_findObj(n,d.layers[i].document);
	if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
	var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
	if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
//--------------------------------------------------------------------------------------------------



//--------------------------------------------------------------------------------------------------
// Fliegen der Moewe
var moewe_status = true;
var delay		= Math.round(Math.random()*10000);
var step_width	= 10;
var step_delay	= 10;
var x = 1500;
var y = Math.round(Math.random()*600);
/*while (y < 100)
	y = Math.round(Math.random()*600);*/
var a = Math.round(Math.random()*10);
/*while ((a < 1) || (a > 6))
	a = Math.round(Math.random()*10);*/

function reposition_gull()
{
	if (x > -120) {
		// Get new positions
		x = x - step_width;
		y = y + a*Math.sin(x/250);
		if (!moewe_status) x= -125;
		document.getElementById("div_gull").style.top = y;
		document.getElementById("div_gull").style.left = x;
		if (moewe_status)
			window.setTimeout("reposition_gull()",step_delay);
	} else {
		x = 1500;
		y = Math.round(Math.random()*600);
		//while (y < 100)
			y = Math.round(Math.random()*600);
		a = Math.round(Math.random()*10);
		//while ((a < 1) || (a > 6))
			a = Math.round(Math.random()*10);
		if (moewe_status)
			window.setTimeout("reposition_gull()",delay);
	}
}

function moewe_change() {
	if (moewe_status) {
		moewe_status = false;
		document.getElementById('moewe_pic').src="grafik/moewe_on.gif";
	} else { 
		moewe_status = true;
		document.getElementById('moewe_pic').src="grafik/moewe_off.gif";
	}
	reposition_gull();
}
//--------------------------------------------------------------------------------------------------



//--------------------------------------------------------------------------------------------------
// Steuerung des Sounds
var sound_status = false;

function sound_start() {
	sound_status = false;
	sound_change();
}

function sound_change() {
	if (!sound_status) {
		with (parent.frames[1].document) { 
			open();
			writeln("<HTML><HEAD><embed src='sound/meeresrauschen.wav' loop='true' autostart='true' hidden='true' height='0' width='0' volume='25'></HEAD><BODY bgcolor=\"#66CCCC\"></BODY></HTML>");
			close();
		}
		sound_status = true;
		document.getElementById('sound_pic').src="grafik/sound_off.gif";
	} else {
		with (parent.frames[1].document) { 
			open();
			close();
		}
		sound_status = false;
		document.getElementById('sound_pic').src="grafik/sound_on.gif";
	}
}
//--------------------------------------------------------------------------------------------------
