var NombreDivCronica;
          NombreDivCronica = 'divCronica';
        
        function MostrarCronica( NombreDivOrigen )
        {
          var divCronica, divContenidoCronica, vis;

          var NombredivContenidoCronica;
          NombredivContenidoCronica = 'divContenidoCronica';
          
          var divOrigen;
          
          if( document.getElementById ) // this is the way the standards work
          {
            divCronica = document.getElementById( NombreDivCronica );
            divOrigen = document.getElementById(NombreDivOrigen);
            divContenidoCronica = document.getElementById(NombredivContenidoCronica);
          }
          else if( document.all ) // this is the way old msie versions work
          {
              divCronica = document.all[NombreDivCronica];
              divOrigen = document.all[NombreDivOrigen];
              divContenidoCronica = document.all[NombredivContenidoCronica];
          }
          else if( document.layers ) // this is the way nn4 works
          {
            divCronica = document.layers[NombreDivCronica];
            divOrigen = document.layers[NombreDivCronica];
            divContenidoCronica = document.layers[NombredivContenidoCronica];
          }
          
          divContenidoCronica.innerHTML = divOrigen.innerHTML;
          
          vis = divCronica.style;
          vis.display = 'block';

            

            var scrolledX, scrolledY;
            if( self.pageYOffset ) {
            scrolledX = self.pageXOffset;
            scrolledY = self.pageYOffset;
            } else if( document.documentElement && document.documentElement.scrollTop ) {
            scrolledX = document.documentElement.scrollLeft;
            scrolledY = document.documentElement.scrollTop;
            } else if( document.body ) {
            scrolledX = document.body.scrollLeft;
            scrolledY = document.body.scrollTop;
            }

            // Next, determine the coordinates of the center of browser's window

            var centerX, centerY;
            if( self.innerHeight ) {
            centerX = self.innerWidth;
            centerY = self.innerHeight;
            } else if( document.documentElement && document.documentElement.clientHeight ) {
            centerX = document.documentElement.clientWidth;
            centerY = document.documentElement.clientHeight;
            } else if( document.body ) {
            centerX = document.body.clientWidth;
            centerY = document.body.clientHeight;
            }

            var r=divCronica.style;
            // Xwidth is the width of the div, Yheight is the height of the
            // div passed as arguments to the function:
            var leftOffset = scrolledX + (centerX - divCronica.clientWidth) / 2;
            var topOffset = scrolledY + (centerY - divCronica.clientHeight) / 2;
            // The initial width and height of the div can be set in the
            // style sheet with display:none; divid is passed as an argument to // the function
            r.top = topOffset + 'px';
            r.left = leftOffset + 'px';

        }    

        function OcultarCronica()
        {
          var divCronica, vis;

          if( document.getElementById ) // this is the way the standards work
          {
            divCronica = document.getElementById( NombreDivCronica );
          }
          else if( document.all ) // this is the way old msie versions work
          {
              divCronica = document.all[NombreDivCronica];
          }
          else if( document.layers ) // this is the way nn4 works
          {
            divCronica = document.layers[NombreDivCronica];
          }
          divCronica.style.display = 'none';
          
        }

//        function toggleLayer( whichLayer )
//        {
//          var elem, vis;
//          if( document.getElementById ) // this is the way the standards work
//            elem = document.getElementById( whichLayer );
//          else if( document.all ) // this is the way old msie versions work
//              elem = document.all[whichLayer];
//          else if( document.layers ) // this is the way nn4 works
//            elem = document.layers[whichLayer];
//          vis = elem.style;
//          // if the style.display value is blank we try to figure it out here
//          if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)
//            vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
//          vis.display = (vis.display==''||vis.display=='block')?'none':'block';


//            var scrolledX, scrolledY;
//            if( self.pageYOffset ) {
//            scrolledX = self.pageXOffset;
//            scrolledY = self.pageYOffset;
//            } else if( document.documentElement && document.documentElement.scrollTop ) {
//            scrolledX = document.documentElement.scrollLeft;
//            scrolledY = document.documentElement.scrollTop;
//            } else if( document.body ) {
//            scrolledX = document.body.scrollLeft;
//            scrolledY = document.body.scrollTop;
//            }

//            // Next, determine the coordinates of the center of browser's window

//            var centerX, centerY;
//            if( self.innerHeight ) {
//            centerX = self.innerWidth;
//            centerY = self.innerHeight;
//            } else if( document.documentElement && document.documentElement.clientHeight ) {
//            centerX = document.documentElement.clientWidth;
//            centerY = document.documentElement.clientHeight;
//            } else if( document.body ) {
//            centerX = document.body.clientWidth;
//            centerY = document.body.clientHeight;
//            }

//            var o=document.getElementById(whichLayer);
//            var r=o.style;
//            // Xwidth is the width of the div, Yheight is the height of the
//            // div passed as arguments to the function:
//            var leftOffset = scrolledX + (centerX - 500) / 2;
//            var topOffset = scrolledY + (centerY - 300) / 2;
//            // The initial width and height of the div can be set in the
//            // style sheet with display:none; divid is passed as an argument to // the function
//            r.top = topOffset + 'px';
//            r.left = leftOffset + 'px';

//        }