var zin  = 0;
 var zout = 0;
function zoomin(){
       if (zin == 0){
          document.sp_java4.zoomx( 1.01 );
          zin  = 1;
          zout = 0;
       }else{
          document.sp_java4.runon( 0.0, 0.0 );
          zin  = 0;
          zout = 0;
       }
}
function zoomout(){
       if (zout == 0){
          document.sp_java.zoomx( 0.99 );
          zout = 1;
          zin  = 0;
       }else{
          document.sp_java.runon( 0.0, 0.0 );
          zout = 0;
          zin  = 0;
       }
}