function topOffset()  {

    // Determine how much the visitor had scrolled

    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;
    }

    // Determine the coordinates of the center of the page

    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 leftOffset = scrolledX + (centerX - 250) / 2;
    return (scrolledY + (centerY - 200) / 2)-150;
    
}
function leftOffset()  {

    // Determine how much the visitor had scrolled

    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;
    }

    // Determine the coordinates of the center of the page

    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;
    }

    return scrolledX + (centerX - 250) / 2;
    //var topOffset = scrolledY + (centerY - 200) / 2;
    
}

function alumniClose() { 
    //16= the number 
    //var i=0;
    //for(i=0;i<=16;i++) {
    //    document.getElementById("pu"+i).style.display="none";    
    //}
    
    document.getElementById("pu0").style.display="none";
    document.getElementById("pu3").style.display="none";
    document.getElementById("pu4").style.display="none";
    
    document.getElementById("pu5").style.display="none";    
    document.getElementById("pu6").style.display="none";
    document.getElementById("pu10").style.display="none";    
    
    document.getElementById("pu13").style.display="none";
    document.getElementById("pu14").style.display="none";
    document.getElementById("pu20").style.display="none";  
    
    document.getElementById("pu8").style.display="none"; 
    document.getElementById("pu15").style.display="none";   
}