$(document).ready(function(){
	if($(window).height() > 640 ){
		var top = ($(window).height() / 2 - 320);
		$("#wrap.index").css('top', top + 'px');
	}
	slideShowHeader();	
	
	
})
function slideShowHeader(){
	var el = $("#headerimage").get(0);
	el.src = headers[j++];
	if( j == headers.length ) j = 0;
	setTimeout(slideShowHeader, 5000);
}