function changeImage (image, id) {for ( x = 1; x <= 5; x++ ) {if ( document.getElementById( id + "_" + x ) ) {document.getElementById( id + "_" + x ).className = "hidden_image";}	
}
var zoomAs = document.getElementById("zoom").getElementsByTagName("a");for ( x = 0; x < zoomAs.length; x++ ) {if (zoomAs[x]) {zoomAs[x].className = "hidden_image";}
}
document.getElementById( id + "_" + image ).className = "visible_image";document.getElementById("zoomimage_"+ id + "_" + image).className = "visible_image";for ( x = 1; x <= 5; x++ ) {if ( document.getElementById( id + "thumb_" + x ) ) {document.getElementById( id + "thumb_"+ x ).className = "image_small";}	
}
document.getElementById( id + "thumb_" + image ).className = "image_small_current";return false;}
function nextImage(id) {var current = document.getElementsByClassName( "visible_image" );var next = current[0].id.substr( current[0].id.length - 1);next = parseInt(next) + 1;if (document.getElementById( id + "_" + next ) ) {changeImage(next,id);}
}
function prevImage(id) {var current = document.getElementsByClassName( "visible_image" );var next = current[0].id.substr( current[0].id.length - 1);next = parseInt(next) - 1;if (document.getElementById( id + "_" + next ) ) {changeImage(next,id);}
}
function show_grundrisse() {document.getElementById( "gal_grundrisse" ).style.display = "block";document.getElementById( "gal_ansichten" ).style.display = "none";document.getElementById( "ansichten" ).className = "first";document.getElementById( "grundrisse" ).className = "sel";document.getElementById( "grundrisse_detailimg" ).style.display = "block";document.getElementById( "ansichten_detailimg" ).style.display = "none";for ( x = 1; x <= 5; x++ ) {if ( document.getElementById( "detailbild_" + x ) ) {document.getElementById( "detailbild_" + x ).className = "hidden_image";}	
}
changeImage(1, "grundriss");}
function show_ansichten() {document.getElementById( "gal_grundrisse" ).style.display = "none";document.getElementById( "gal_ansichten" ).style.display = "block";document.getElementById( "ansichten" ).className = "sel";document.getElementById( "grundrisse" ).className = "desel";document.getElementById( "grundrisse_detailimg" ).style.display = "none";document.getElementById( "ansichten_detailimg" ).style.display = "block";for ( x = 1; x <= 5; x++ ) {if ( document.getElementById( "grundriss_" + x ) ) {document.getElementById( "grundriss_" + x ).className = "hidden_image";}	
}
changeImage(1, "detailbild");}
function goTo(url) {if (url != "-") {window.location.href = url;}
}