tooltip: {
		        //trigger: 'item',  formatter: '{b}:{c}'
	        	enterable:true,
	        	trigger:'item',
	        	formatter:function(params){
	        		//console.log(params);
	        		var relVal = params.name + "<br/>";
	        		var ser = option.series;
	        		for(var i = 0 ;i < ser.length;i++){
	        			for(var j = 0 ;j<ser[i].data.length;j++){
	        				if(ser[i].data[j].name==params.name){
	        					relVal += ser[i].name+":"+ser[i].data[j].value+"<br/>";
	        				}
	        			}
	        		}
	        		return relVal;
	        	}
		    }