// JavaScript Document
function initSidebarSlider(){
	
	var name                    = "#sidebar";
	var sidebar_top_limit       = 100;
	var sidebar_top_margin      = 20;
	var sidebar_slide_duration  = 500;
	
	setSize();
	
	/*
	$(function() {
		//sidebar_top_limit = parseInt(window.height() / 2);
		setSize();		
	});
	*/
	
	$(window).scroll(function() {
		offset = $(document).scrollTop() + sidebar_top_margin;
	 
		if(offset < sidebar_top_limit)
			offset = sidebar_top_limit;
	 
		$(name).animate({top:offset},{duration:sidebar_slide_duration,queue:false});
	});

}
function setSize() {
  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;
  }
  //window.alert( 'Width = ' + myWidth );
  //window.alert( 'Height = ' + myHeight );
  var sidebarheight = parseInt($(name).height()) / 2;
  sidebar_top_limit = (myHeight / 2) - sidebarheight - 100;
  sidebar_top_margin = (myHeight / 2) - sidebarheight - 100;
}