var dopac = .01 ;  tp = 10 ;  x = 0 ;  inc = 0 ; sp = " " ;
    counter = 0 ;
			
function cover_imgs() {
 
	var sp = setTimeout("fadeblock()", 100);		
	var sp = setTimeout("showpics('SL01',  5.0)", 4000);	
	var sp = setTimeout("showpics('SL02', 3.9)", 8000);	
	var sp = setTimeout("showpics('SL03',   2.8)", 12000);	
	var sp = setTimeout("showpics('SL04',      1.7)",16000);	
    var sp = setTimeout("showpics('SL05',     1.32)",20000);
    var ra = setTimeout("reset_allA()",30000);
	
	var sp = setTimeout("fadeblock()", 35000);		
	var sp = setTimeout("showpics('SL01',  5.0)", 38000);	
	var sp = setTimeout("showpics('SL02', 3.9)", 42000);	
	var sp = setTimeout("showpics('SL03',   2.8)", 46000);	
	var sp = setTimeout("showpics('SL04',      1.7)",50000);	
    var sp = setTimeout("showpics('SL05',     1.32)",54000);
    var ra = setTimeout("reset_allB()",66000);
	
	var sp = setTimeout("fadeblock()", 71000);		
	var sp = setTimeout("showpics('SL01',  5.0)", 74000);	
	var sp = setTimeout("showpics('SL02', 3.9)", 78000);	
	var sp = setTimeout("showpics('SL03',   2.8)", 82000);	
	var sp = setTimeout("showpics('SL04',      1.7)",86000);	
    var sp = setTimeout("showpics('SL05',     1.32)",90000);
	var wr = setTimeout(" location.reload(); ", 100000 )

}

function fadeblock()
{ 	
	if(dopac <= .99 )  
	{ 
	dopac += .02 ;	 
	document.getElementById('colourblk').style.display = "block" ;
	document.getElementById('colourblk').style.opacity = dopac ;
	document.getElementById('colourblk').style.MozOpacity = dopac ;
	document.getElementById('colourblk').style.filter="alpha(opacity="+dopac*100+")" ;
	var fb = setTimeout("fadeblock()",50);	
	}
}

function showblock()
{ 	
	if(dopac >= 0.1 )  
	{ 
	dopac -= .02 ;	 
	document.getElementById('colourblk').style.opacity = dopac ;
	document.getElementById('colourblk').style.MozOpacity = dopac ;
	document.getElementById('colourblk').style.filter="alpha(opacity="+dopac*100+")" ;
	
	var sb = setTimeout("showblock()",50);	
	}    
	else
	document.getElementById('colourblk').style.display = "none" ;
}

function showpics(e, incm)
 { 	
   document.getElementById(e).style.display = "block" ;
   x   +=  0.01 ;
   inc  =  Math.cos(x) ;
   tp  +=  inc * incm ;

	document.getElementById(e).style.top = tp + "px" ;
	if ( x <= Math.PI / 2)  var sp = setTimeout(function(){ showpics(e, incm)},05);	
	else { tp = 10 ; x = 0 ; } 
 }
function reset_allA()
 { 	
   document.getElementById('SL01').style.display = "none" ;
   document.getElementById('SL02').style.display = "none" ;
   document.getElementById('SL03').style.display = "none" ;
   document.getElementById('SL04').style.display = "none" ;
   document.getElementById('SL05').style.display = "none" ;
   document.getElementById('colourblk').style.display = "none" ;
   document.getElementById('colourblk').style.opacity = 0 ; dopac = .01 ;
   document.getElementById('colourblk').style.MozOpacity = dopac ;
   document.getElementById('colourblk').style.filter="alpha(opacity="+dopac*100+")" ;
   
 
   document.getElementById('SL01').innerHTML = "<img src='Sepioloidea lineolata small.jpg' title='Sepioloidea lineolata - photo Andrew Green' onclick = \"zoom1('Sepioloidea lineolata.jpg',event);\" />" ;
   document.getElementById('SL02').innerHTML = "<img src='Sagaminopteron ornatum small.jpg' title='Sagaminopteron ornatum - photo Andrew Green' onclick = \"zoom1('Sagaminopteron ornatum.jpg',event);\" />" ;
   document.getElementById('SL03').innerHTML = "<img src='Spindle cowrie small.jpg' title='Spindle cowrie - photo Andrew Green' onclick = \"zoom1('Spindle cowrie.jpg',event);\" />" ;
   document.getElementById('SL04').innerHTML = "<img src='Serpulidae small.jpg' title='Serpulidae - photo Andrew Green' onclick = \"zoom1('Serpulidae.jpg',event);\" />" ;
   document.getElementById('SL05').innerHTML = "<img src='Antennarius striatus small.jpg' title='Antennarius striatus - photo Andrew Green' onclick = \"zoom1('Antennarius striatus.jpg',event);\" />" ;
 
 }
   
function reset_allB()
 { 	
   document.getElementById('SL01').style.display = "none" ;
   document.getElementById('SL02').style.display = "none" ;
   document.getElementById('SL03').style.display = "none" ;
   document.getElementById('SL04').style.display = "none" ;
   document.getElementById('SL05').style.display = "none" ;
   document.getElementById('colourblk').style.opacity = 0 ; dopac = .01 ;
   document.getElementById('colourblk').style.MozOpacity = dopac ;
   document.getElementById('colourblk').style.filter="alpha(opacity="+dopac*100+")" ;
   
   
   
   document.getElementById('SL01').innerHTML = "<img src='Ascidians small.jpg' title='Ascidians - photo Andrew Green' onclick = \"zoom1('Ascidians.jpg',event);\" />" ;
   document.getElementById('SL02').innerHTML = "<img src='Holopneustes pycnotilus small.jpg' title='Holopneustes pycnotilus - photo Andrew Green' onclick = \"zoom1('Holopneustes pycnotilus.jpg',event);\" />" ;
   document.getElementById('SL03').innerHTML = "<img src='Pygmy leatherjacket small.jpg' title='Pygmy leatherjacket - photo Andrew Green' onclick = \"zoom1('Pygmy leatherjacket.jpg',event);\" />" ;
   document.getElementById('SL04').innerHTML = "<img src='Squid at night small.jpg' title='Squid at night - photo Andrew Green' onclick = \"zoom1('Squid at night.jpg',event);\" />" ;
   document.getElementById('SL05').innerHTML = "<img src='Sabellidae small.jpg' title='Sabellidae - photo Andrew Green' onclick = \"zoom1('Sabellidae.jpg',event);\" />" ;  
 }
 
function zoom1(src,e) {
 
	 
}