function getWindowWidth(){
  var myWidth = 0, myHeight = 0;
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myWidth = window.innerWidth;
    myHeight = window.innerHeight;
  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
    //IE 6+ in 'standards compliant mode'
    myWidth = document.documentElement.clientWidth;
    myHeight = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    //IE 4 compatible
    myWidth = document.body.clientWidth;
    myHeight = document.body.clientHeight;
  }
  return myWidth;
}
function getWindowHeight(){
  var myWidth = 0, myHeight = 0;
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myWidth = window.innerWidth;
    myHeight = window.innerHeight;
  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
    //IE 6+ in 'standards compliant mode'
    myWidth = document.documentElement.clientWidth;
    myHeight = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    //IE 4 compatible
    myWidth = document.body.clientWidth;
    myHeight = document.body.clientHeight;
  }
  return myHeight;
}
function getScreenWidth(){
    return screen.width;
}
function getScreenHeight(){
    return screen.height;
}
function rpresenter(){
    if(getScreenHeight()>800){
        location.href='rpresenter.html?';
    }else{
        window.open('rpresenter.html', 'rpresenter','toolbar=no,left=10,top=10,screenX=0,screenY=0,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=yes,width='+screen.availWidth+',height='+screen.availHeight+'');
    }
}

function rpresenterPopupResize(){
    if(getScreenHeight()>800){
    }else{
        window.moveTo(0,0);
        window.resizeTo(screen.availWidth,screen.availHeight);
    }
}