window.onload = function () { setTimeout( "stoelken_xchg_init()", 1 ); }


function stoelken_xchg_init( )
{
	var groups = Array( "g1", "g2", "g3", "g4");
	var elements = Array( "a", "b", "c", "d", "e", "f", "gg", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w" );

	var ig = ie = 0;

	for( ig = 0; ig < 4; ig++ )
	{
		for( ie = 0; ie < 24; ie++ )
		{
			stoelken_xchg_init_single( groups[ig], elements[ie] );
		}
	}
}

function stoelken_xchg_init_single ( group, numbr )
{

	thingi = document.getElementById( "stoelken_xchg_" + group + "_" + numbr );
	if (thingi != null) {
		thingi.onclick = function( ) { stoelken_xchg_change( group, numbr ); }
	}
}

function stoelken_xchg_change( group, numbr )
{
    var ext_src;
    var ext_title;

    gross = document.getElementById( "stoelken_xchg_" + group + "_g" );
    klein = document.getElementById( "stoelken_xchg_" + group + "_" + numbr );



    ext_src = gross.src;
    ext_title = gross.title;


    gross.src = klein.src.replace( /klein/, "gross" );
    gross.title = klein.title;


    klein.src = ext_src.replace( /gross/, "klein" );
    klein.title = ext_title;


    klein.height = 80;
    klein.width = 107;

    gross.height = 195;
    gross.width = 261;
}