function scroll(){
	var scrolling = getScrollXY();
	
	if(scrolling > 400){
		var margin = scrolling - 400;
		$('#primary').css('margin-top', margin);

	}else{
		var marginTop = $('#primary').css('margin-top')
		if(marginTop != '0' || marginTop != undefined){
			$('#primary').css('margin-top', '0');
		}
		
	}
}

function getScrollXY() {
   var scrOfY = 0;
   if( typeof( window.pageYOffset ) == 'number' ) {
     //Netscape compliant
     scrOfY = window.pageYOffset;
     } else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {
     //DOM compliant
     scrOfY = document.body.scrollTop;
   } else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {
     //IE6 standards compliant mode
     scrOfY = document.documentElement.scrollTop;
   }
   return scrOfY;
}