function fig1() {
      window.open('3Amino23ddATP.html','figu1','width=400,height=250,scrollbars=yes,resize=yes,');
    }
    function fig2() {
      window.open('3Azido23ddATP.html','figu2','width=400,height=250,scrollbars=yes,resize=yes,');
    }
    function fig3() {
      window.open('N6Methyl2dATP.html','figu3','width=400,height=300,scrollbars=yes,resize=yes,');
    }
    function fig4() {
      window.open('3Amino23ddCTP.html','figu4','width=400,height=300,scrollbars=yes,resize=yes,');
    }
	function fig5() {
      window.open('5Bromo2dCTP.html','figu5','width=400,height=250,scrollbars=yes,resize=yes,');
    }
    function fig6() {
      window.open('5Methyl2dCTP.html','figu6','width=400,height=250,scrollbars=yes,resize=yes,');
    }
    function fig7() {
      window.open('3Azido23ddGTP.html','figu7','width=400,height=250,scrollbars=yes,resize=yes,');
    }
    function fig8() {
      window.open('O6Methyl2dGTP.html','figu8','width=400,height=280,scrollbars=yes,resize=yes,');
    }
    function fig9() {
      window.open('3Azido3dTTP.html','figu9','width=400,height=250,scrollbars=yes,resize=yes,');
    }
    function fig10() {
      window.open('5Bromo2dUTP.html','figu10','width=400,height=250,scrollbars=yes,resize=yes,');
    }
    function fig11() {
      window.open('5Fluoro2dUTP.html','figu11','width=400,height=250,scrollbars=yes,resize=yes,');
    }
    function fig12() {
      window.open('26Diamino.html','figu12','width=600,height=250,scrollbars=yes,resize=yes,');
    }
    function ref1() {
      window.open('deo_ref.html','refer1','width=280,height=150,scrollbars=yes,resize=yes,');
    }