var json ='[["r",[312,72,0],{"name":"","r":"100","_json_":0},["1","2"]],["r",[312,160,0],{"name":"","r":"100","_json_":1},["2","0"]],["w",[312,120,312,160]],["v",[160,112,0],{"name":"","value":"dc(5)","_json_":3},["1","0"]],["g",[160,160,0],{"_json_":4},["0"]],["w",[160,112,312,72]],["w",[160,160,312,208]],["view",0,0,2,"20","10","1G",null,"100","1","1000"]]'
console.log(json)

	 function extract_circuit() {
	   var ckt =  new cktsim.Circuit(json)
		if(ckt)
		{
			console.log('The json structure loaded is valid')
		}
		else
			console.log('The json strucuture loaded is invalid')
	}
	 function dc_analysis() {


	    var ckt1 = new cktsim.Circuit(json)
	    if (ckt1 === null) return;

	    // run the analysis
	    var show_result = ckt1.dc()


	    }



var a = extract_circuit()