var t;
var s;
var i;
var m;
var URL;

function showMoreFrame(ID, strUrl)
{
	i = ID;
	parent.document.getElementById('laag1').width=175;
	parent.document.getElementById('laag2').width=175;
	parent.document.getElementById('laag3').width=175;
	parent.document.getElementById('laag4').width=175; 

	t = 175;
	s = 175;

	URL = strUrl;
	top.check.location.href = URL;

	k = setTimeout('Grow()',10);
// en de andere schermen klein maken
	l = setTimeout('setSmooth()',3);
}

function showLessFrame(ID, strUrl)
{
	i = ID;
	t = 720;
	s = 0;
// het aangekozen scherm klein maken
	URL = strUrl;
	m = setTimeout('Shrink()',3);
// en de andere schermen groter maken
	n = setTimeout('setSmoothWidth()',1);
}


function Grow()
{
	t = t + 3;
	if (t > 720)
	{
  		clearInterval(k);
	// en zet de nieuwe URl neer
		document.location = URL;
  	}
	else
  	{
  		parent.document.getElementById(i).width=t;
		k = setTimeout('Grow()',1);
  	}
}

function Shrink()
{
	t = t - 3;
	if (t < 175)
	{
  		clearInterval(m);
	// en zet de oorspronkelijke URl neer
		document.location = URL;
		top.check.location.href = URL;
  	}
	else
  	{
  		parent.document.getElementById(i).width=t;
		m = setTimeout('Shrink()',1);
  	}
}

function setSmoothWidth()
{
	s = s + 1;
//  alert(t);		
	if (s > 175)
	{
		clearInterval(n);
  	}
	else
  	{
		if ( i == 'laag1' )
		{
			parent.document.getElementById('laag2').width=s;
			parent.document.getElementById('laag3').width=s;
			parent.document.getElementById('laag4').width=s;
		}	
		else if ( i == 'laag2' )
		{
			parent.document.getElementById('laag1').width=s;
			parent.document.getElementById('laag3').width=s;
			parent.document.getElementById('laag4').width=s;
		}	
		else if ( i == 'laag3' )
		{
			parent.document.getElementById('laag1').width=s;
			parent.document.getElementById('laag2').width=s;
			parent.document.getElementById('laag4').width=s;
		}	
		else if ( i == 'laag4' )
		{
			parent.document.getElementById('laag1').width=s;
			parent.document.getElementById('laag2').width=s;
			parent.document.getElementById('laag3').width=s;
		}	
		n = setTimeout('setSmoothWidth()',1);
  	}
}

function setSmooth()
{
	s = s - 1;
//  alert(t);		
	if (s == 0)
	{
		clearInterval(l);
		if ( i == 'laag1' )
		{
			parent.document.getElementById('laag2').width=0;
			parent.document.getElementById('laag3').width=0;
			parent.document.getElementById('laag4').width=0;
		}	
		else if ( i == 'laag2' )
		{
			parent.document.getElementById('laag1').width=0;
			parent.document.getElementById('laag3').width=0;
			parent.document.getElementById('laag4').width=0;
		}	
		else if ( i == 'laag3' )
		{
			parent.document.getElementById('laag1').width=0;
			parent.document.getElementById('laag2').width=0;
			parent.document.getElementById('laag4').width=0;
		}	
		else if ( i == 'laag4' )
		{
			parent.document.getElementById('laag1').width=0;
			parent.document.getElementById('laag2').width=0;
			parent.document.getElementById('laag3').width=0;
		}	
  	}
	else
  	{
		if ( i == 'laag1' )
		{
			parent.document.getElementById('laag2').width=s;
			parent.document.getElementById('laag3').width=s;
			parent.document.getElementById('laag4').width=s;
		}	
		else if ( i == 'laag2' )
		{
			parent.document.getElementById('laag1').width=s;
			parent.document.getElementById('laag3').width=s;
			parent.document.getElementById('laag4').width=s;
		}	
		else if ( i == 'laag3' )
		{
			parent.document.getElementById('laag1').width=s;
			parent.document.getElementById('laag2').width=s;
			parent.document.getElementById('laag4').width=s;
		}	
		else if ( i == 'laag4' )
		{
			parent.document.getElementById('laag1').width=s;
			parent.document.getElementById('laag2').width=s;
			parent.document.getElementById('laag3').width=s;
		}	
		l = setTimeout('setSmooth()',1);
  	}
}