Ext.KeyNav=function(b,a){this.el=Ext.get(b);Ext.apply(this,a);if(!this.disabled){this.disabled=true;this.enable()}};Ext.KeyNav.prototype={disabled:false,defaultEventAction:"stopEvent",forceKeyDown:false,prepareEvent:function(c){var a=c.getKey();var b=this.keyToHandler[a];if(Ext.isSafari2&&b&&a>=37&&a<=40){c.stopEvent()}},relay:function(c){var a=c.getKey();var b=this.keyToHandler[a];if(b&&this[b]){if(this.doRelay(c,this[b],b)!==true){c[this.defaultEventAction]()}}},doRelay:function(c,b,a){return b.call(this.scope||this,c)},enter:false,left:false,right:false,up:false,down:false,tab:false,esc:false,pageUp:false,pageDown:false,del:false,home:false,end:false,keyToHandler:{37:"left",39:"right",38:"up",40:"down",33:"pageUp",34:"pageDown",46:"del",36:"home",35:"end",13:"enter",27:"esc",9:"tab"},enable:function(){if(this.disabled){if(this.forceKeyDown||Ext.isIE||Ext.isSafari3||Ext.isAir){this.el.on("keydown",this.relay,this)}else{this.el.on("keydown",this.prepareEvent,this);this.el.on("keypress",this.relay,this)}this.disabled=false}},disable:function(){if(!this.disabled){if(this.forceKeyDown||Ext.isIE||Ext.isSafari3||Ext.isAir){this.el.un("keydown",this.relay,this)}else{this.el.un("keydown",this.prepareEvent,this);this.el.un("keypress",this.relay,this)}this.disabled=true}}};