{
//__________________________________________________________________________________________
//
// Example to draw 2 histos in one canvas with common Xaxis (e.e. clued together
// The 2 subpads are placed such that the lower Xaxis of the upper histo coincides
// with the upper Xaxis of the lower (default margin in pad is .0025)
// The upper pad is made transparent
//
// Author:  Otto.Schaile@Physik.Uni-Muenchen.DE
//______________________________________________________________________________________

   gROOT->Reset();
   TCanvas c1("c1","multipads",700,700);
   gStyle->SetPadBorderMode(0);
   gStyle->SetFrameBorderMode(0);
   Float_t small = 1e-7;
//   c1.Divide(1,2,small,small);
   gStyle->SetOptTitle(0);

   TPad p1("p1", "p1", 0, 0, 1, 0.5);
   p1->Draw();
   c1->cd();

   TPad p2("p2", "p2", 0, 0.45, 1, 0.95);
   p2->SetFillStyle(4000);

   p2->Draw();

   TH1F h1("h1","test1",40,-4,4);
   TH1F h2("h2","test2",40,-4,4);
//   h2->GetXaxis()->SetNdivisions(0);
   h2->SetLabelOffset(10000);
   h1.FillRandom("gaus",1000);
   h2.FillRandom("gaus",10000);
   
   p1.cd();
   gPad->SetTopMargin(small);
   gPad->SetTickx(-1);
   h1.Draw();

   p2.cd();
   gPad->SetTopMargin(small);
   h2.Draw();
}