$(document).ready(
 function()
 {
  $(window).resize(
	function(){
		setTop($(".ui-page-active .ui-footer"));		
	}
  );	 
 }
);


function setTop(el){
	var fromTop = $(window).scrollTop(),
		screenHeight = window.innerHeight,
		footerHeight = el.outerHeight(),
		contentHeight =$('.ui-page-active .ui-content').outerHeight(),
		headerHeight =$('.ui-page-active .ui-header').outerHeight();
		
	
	heightall=fromTop + screenHeight;
	headerContent=contentHeight+headerHeight;
	el.css('top',(heightall-headerContent-footerHeight));
}