var pptevent=new function(){
		this.eventData=new Array();
		this.addData=function(index,time_stamp,cur_doc_id,cur_page_no){
			for (var i = 0; i < this.eventData.length; i++) {
			  	 if(this.eventData[i]["index"] == index){
			   		 this.eventData[i]["time_stamp"] =time_stamp;
			         this.eventData[i]["cur_doc_id"] =cur_doc_id;
			         this.eventData[i]["cur_page_no"] =cur_page_no;
			   		 return;
			  	 }
	 	  	}
		   this.eventData[this.eventData.length] = new Object();
		   this.eventData[this.eventData.length - 1]["index"] =index;
		   this.eventData[this.eventData.length - 1]["time_stamp"] =time_stamp;
		   this.eventData[this.eventData.length - 1]["cur_doc_id"] =cur_doc_id;
		   this.eventData[this.eventData.length - 1]["cur_page_no"] =cur_page_no;
		}
		
		this.doc_page=function(index){
			/*for (var i = 0; i < this.eventData.length; i++){
			  	 if(i==index){
					return '"'+this.eventData[i]["cur_doc_id"]+'","'+this.eventData[i]["cur_page_no"]+'"';
			  	 }
	 	  	}*/
	 	  	return this.eventData[index]["cur_doc_id"]+','+this.eventData[index]["cur_page_no"];
	 	  	//return "";
		}
		
		this.deletePageSig=function(doc_id){
			for(var i = this.eventData.length-1; i>=0; i--){
		  	  if(this.eventData[i]["doc_id"] == doc_id ){
		   		  this.eventData.splice(i,1);
		  	  }
	 	  	}
		}

		this.getLength=function(){
			//alert(this.eventData.length);
			return this.eventData.length;
		}
		this.getTime_stamp=function(index){
			return this.eventData[index]["time_stamp"];
		}
		this.chekTime_Stamp=function(time_stamp){
			for (var i = 0; i < this.eventData.length; i++){
			 if(this.eventData[i]["time_stamp"]==time_stamp){
					var tempstr=this.eventData[i]["cur_doc_id"]+','+this.eventData[i]["cur_page_no"];
					//this.eventData.splice(i,1);
					return tempstr;
			  }
		 	}
			return "";
		}
		this.getTimeByPageId=function(doc_id,page_id){
			for (var i = 0; i < this.eventData.length;i++){
				if(this.eventData[i]["cur_doc_id"]==doc_id && this.eventData[i]["cur_page_no"]==page_id){
					return this.eventData[i]["time_stamp"];
				}
			}
			if(ppt.pptData[0]["doc_id"] == doc_id && ppt.pptData[0]["page_id"] == page_id)
			return 1;
			return "";
		}		
}