*** orig_panzoombar.js	2010-12-11 11:59:40.000000000 +0100
--- my_panzoombar.js	2010-12-11 11:55:40.000000000 +0100
***************
*** 1,7 ****
--- 1,15 ----
+ //----------------------------------------------------------------------------
+ //	Parameter "minZoom"	verkürzt den Slideranzeigebereich
+ //				manipuliert aber *nicht* map.zoom
+ //
+ //	Funktion von Mouseradzoom und "zoomout"-Button bleiben unangetastet
+ //----------------------------------------------------------------------------
+ 
  OpenLayers.Control.PanZoomBar=OpenLayers.Class(OpenLayers.Control.PanZoom, {
  
  	zoomStopWidth:18,
  	zoomStopHeight:11,
+ 	minZoom:0,
  	slider:null,
  	sliderEvents:null,
  	zoombarDiv:null,
***************
*** 80,86 ****
  			"click":this.doubleClick
  		});
  		var sz=new OpenLayers.Size();
! 		sz.h=this.zoomStopHeight*this.map.getNumZoomLevels();
  		sz.w=this.zoomStopWidth;
  		var div=null;
  		if(OpenLayers.Util.alphaHack()) {
--- 88,94 ----
  			"click":this.doubleClick
  		});
  		var sz=new OpenLayers.Size();
! 		sz.h=this.zoomStopHeight*Math.max(this.map.getNumZoomLevels()-this.minZoom,1);
  		sz.w=this.zoomStopWidth;
  		var div=null;
  		if(OpenLayers.Util.alphaHack()) {
***************
*** 104,110 ****
  		this.startTop=parseInt(div.style.top);
  		this.div.appendChild(slider);
  		this.map.events.register("zoomend",this,this.moveZoomBar);
! 		centered=centered.add(0,this.zoomStopHeight*this.map.getNumZoomLevels());
  		return centered;
  	},

--- 112,118 ----
  		this.startTop=parseInt(div.style.top);
  		this.div.appendChild(slider);
  		this.map.events.register("zoomend",this,this.moveZoomBar);
! 		centered=centered.add(0,this.zoomStopHeight*Math.max(this.map.getNumZoomLevels()-this.minZoom,1));
  		return centered;
  	},

***************
*** 199,213 ****
  			}else {
  				zoomLevel+=Math.round(deltaY/this.zoomStopHeight);
  			}
! 			this.map.zoomTo(zoomLevel);
  			this.mouseDragStart=null;
  			this.zoomStart=null;
  			OpenLayers.Event.stop(evt);
  		}
  	},

  	moveZoomBar:function() {
! 		var newTop=((this.map.getNumZoomLevels()-1)-this.map.getZoom())*this.zoomStopHeight+this.startTop+1;
  		this.slider.style.top=newTop+"px";
  	},

--- 207,222 ----
  			}else {
  				zoomLevel+=Math.round(deltaY/this.zoomStopHeight);
  			}
! 			this.map.zoomTo(Math.max(zoomLevel, this.minZoom));
  			this.mouseDragStart=null;
  			this.zoomStart=null;
  			OpenLayers.Event.stop(evt);
+ 			this.moveZoomBar();
  		}
  	},

  	moveZoomBar:function() {
! 		var newTop=((this.map.getNumZoomLevels()-1)-Math.max(this.map.getZoom(),this.minZoom))*this.zoomStopHeight+this.startTop+1;
  		this.slider.style.top=newTop+"px";
  	},