function clrSearchbox(){
		var searchbox = document.getElementById( 'zoek' );
		searchbox.value = '';
	}
	
	function fillSearchbox(){
		var searchbox = document.getElementById( 'zoek' );
		if( searchbox.value == '' ){
			searchbox.value = 'Search :';
		}
	}

	if( typeof jQuery != 'undefined' ){
		$( document ).ready( function (){ $( '.publication_text' ).toggle(); } );
	}

	var arrIsHidden = new Array();
	
	function toggle_publication( ID ){
		var a = document.getElementById( 'anchor' + ID );
		var div = document.getElementById( 'publication_div' + ID );
		var close_anchor = document.getElementById( 'close_' + ID );

			$( div ).animate( { height:'toggle' }, 'slow' );

			if( arrIsHidden[ID] == 1 || typeof arrIsHidden[ID] == 'undefined' ){
				a.innerHTML = "» Close Publication";
				close_anchor.style.display = 'block';
				$( close_anchor ).animate( { opacity:'1.0' }, 'slow' );
				arrIsHidden[ID] = 2;
			}else{
				a.innerHTML = "» Read Publication";
				$( close_anchor ).animate( { opacity:'0.0' }, 'slow', function(){ close_anchor.style.display = 'none'; } );
				arrIsHidden[ID] = 1;
			}
		return false;
	}