function launchRequest()
{myText=new String();var url=RlUrl;var xml=$.ajax({url:url,async:false,dataType:'xml'}).responseXML;var instruction=[];var dist=[];var time=[];var acc_dist=[];var acc_time=[];var wkt=[];$(xml).find("edge").each(function(){var id_text=$(this).attr('id');var val=$(this).find('instruction').text();instruction.push(val.toString());var val=$(this).find('dist').text();dist.push(parseFloat(val));var val=$(this).find('time').text();time.push(parseFloat(val));var val=$(this).find('acc_dist').text();acc_dist.push(parseFloat(val));var val=$(this).find('acc_time').text();acc_time.push(parseFloat(val));var val=$(this).find('wkt').text();wkt.push(val.toString());});var hold=[];for(var i=0;i<wkt.length;i++)
{var str=wkt[i];var a=str.indexOf("(");var z=str.indexOf(")");str=str.substring(a+1,z);var points=[];var points=str.split(",");var leg=[];for(var j=0;j<points.length;j++)
{var LL=[];LL=points[j].split(" ");leg[j]=new LatLng(parseFloat(LL[1]),parseFloat(LL[0]));}
hold.push(leg);}
var steps=[];for(var i=0;i<wkt.length;i++)
{var newStep=new step(instruction[i],dist[i],time[i],acc_dist[i],acc_time[i],hold[i]);steps.push(newStep);}
newRoute=new route(steps);RLroutes.push(newRoute);RlRequest=true;}
function examineRLroutes()
{document.write("Examine RLroutes[] <br>");document.write("RLroutes length is "+RLroutes.length+"<br>");document.write("steps length is "+RLroutes[RLroutes.length-1].steps.length+"<br>");document.write("Steps are: <br>");for(i=0;i<RLroutes[0].steps.length;i++)
{document.write("Instruction "+RLroutes[0].steps[i].instruction+"  ");document.write("dist "+RLroutes[0].steps[i].dist+"  ");document.write("time "+RLroutes[0].steps[i].time+"  ");document.write("acc dist "+RLroutes[0].steps[i].acc_dist+"  ");document.write("acc time "+RLroutes[0].steps[i].acc_time+"  ");for(var j=0;j<RLroutes[0].steps[i].leg.length;j++)document.write("leg "+j+"  "+RLroutes[0].steps[i].leg[j].lat+","+RLroutes[0].steps[i].leg[j].lng+"  ");document.write("<p>");}}
function getRlWaypoints(nPoints)
{var polyline=[];var TotalLength;var CumDist=[];var nS=RLroutes[0].steps.length;for(var i=0;i<nS;i++)
{nL=RLroutes[0].steps[i].leg.length;for(var j=0;j<nL;j++)
{if(i!=0&&j==0)continue;var LL=new google.maps.LatLng(RLroutes[0].steps[i].leg[j].lat,RLroutes[0].steps[i].leg[j].lng);polyline.push(LL);}}
TotalLength=0;CumDist.push(TotalLength);for(var i=1;i<polyline.length;i++)
{var dist=LatLngDist(polyline[i-1].lat(),polyline[i-1].lng(),polyline[i].lat(),polyline[i].lng());TotalLength+=dist;CumDist.push(TotalLength);}
var chunk=TotalLength/(nPoints+0.99);rlPoints.length=0;var point=1;for(var i=0;i<polyline.length;i++)
{if(CumDist[i]>=point*chunk)
{rlPoints.push(polyline[i]);point++;}}
if(travelDirection==0)
var i=0;else
rlPoints.reverse();}
function LatLng(lat,lng)
{this.lat=lat;this.lng=lng;}
function step(instruction,dist,time,acc_dist,acc_time,leg)
{this.instruction=instruction;this.dist=dist;this.time=time;this.acc_dist=acc_dist;this.acc_time=acc_time;this.leg=leg;}
function route(steps)
{this.steps=steps;}
function edgenode(nodes)
{this.nodes=nodes;}