if (!document.all) {
	if (document.getElementById) { 
		document.captureEvents(Event.MOUSEDOWN)
	} else if (document.layers) {
  		document.captureEvents(Event.MOUSEDOWN)
	}
}

document.ondrag = function () { return false; };
document.onselectstart = function () { return false; };
//document.onclick = function () { return false; };
document.onmousedown = function () { return false; };

var myWidth = 0, myHeight = 0;

function pageSize() {
  
  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;
}