Date.prototype.incMonth=function(){if(this.getMonth()>10){this.setFullYear(this.getFullYear()+1,0,this.getDate())}else{this.setFullYear(this.getFullYear(),this.getMonth()+1,this.getDate())}return this};Date.prototype.decMonth=function(){if(this.getMonth()<1){this.setFullYear(this.getFullYear()-1,11,this.getDate())}else{this.setFullYear(this.getFullYear(),this.getMonth()-1,this.getDate())}return this};Date.prototype.incDate=function(){this.setTime(this.getTime()+86400000);return this};Date.prototype.decDate=function(){this.setTime(this.getTime()-86400000);return this};Date.prototype.dateFormat=function(){var a="";if(this.getDate()<10){a+="0"}a+=this.getDate()+".";if(this.getMonth()<9){a+="0"}a+=(this.getMonth()+1)+"."+this.getFullYear();return a};Date.prototype.timeFormat=function(){var a="";if(this.getHours()<10){a+="0"}a+=this.getHours()+":";if(this.getMinutes()<10){a+="0"}a+=this.getMinutes();return a};Date.prototype.datimeFormat=function(){return this.dateFormat()+" "+this.timeFormat()};