function ShowPhotogaleryImage(src){
        document.getElementById('photogalery_image').src = src;
    }
    
    function ShowProgramPreview(src,category){
        document.getElementById('program_preview'+category).innerHTML = '<img src="'+ src +'" alt="" />';
    }
    
    function HideProgramPreview(category){
        document.getElementById('program_preview'+category).innerHTML = '<br />';
    }
    
    var NewWindow1 = null;
    function ShowWin(href, w, h){
    	if(NewWindow1){ NewWindow1.close(); }
    	if(NewWindow1==null || NewWindow1.closed){
    		var top = screen.height/2 - h/2;
    		var left = screen.width/2 - w/2;
    		var settings =
    	 		"left=" + left + "px,"
    			+"top=" + top + "px,"
    			+"width=" + w + "px,"
    			+"height=" + h + "px,"
    			+"toolbar=yes,"
    			+"location=no,"
    			+"directories=no,"
    			+"status=yes,"
    			+"menubar=yes,"
    			+"scrollbars=yes,"
    			+"resizable=yes";
    		NewWindow1 = window.open(href,'okno',settings);
    	}
    	NewWindow1.focus();
    }