function getScrollHeight(){
         var h = window.pageYOffset ||
                 document.body.scrollTop ||
                 document.documentElement.scrollTop;
                 
         return h ? h : 0;
}
      
      
function getWindowHeight() {
		  var myHeight = 0;
		  if( typeof( window.innerWidth ) == 'number' ) {
		    //Non-IE
		    myHeight = window.innerHeight;
		  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
		    //IE 6+ in 'standards compliant mode'
		    myHeight = document.documentElement.clientHeight;
		  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
		    //IE 4 compatible
		    myHeight = document.body.clientHeight;
		  }
		  return myHeight
}
	  
function getWindowWidth() {
		  var myHeight = 0;
		  if( typeof( window.innerWidth ) == 'number' ) {
		    //Non-IE
		    myWidth = window.innerWidth;
		  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
		    //IE 6+ in 'standards compliant mode'
		    myWidth = document.documentElement.clientWidth;
		  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
		    //IE 4 compatible
		    myWidth = document.body.clientWidth;
		  }
		  return myWidth
}