var viewport = {
	o: function() {
		if (self.innerHeight) {
			this.pageYOffset = self.pageYOffset;
			this.pageXOffset = self.pageXOffset;
			this.innerHeight = self.innerHeight;
			this.innerWidth = self.innerWidth;
		} else if (document.documentElement && document.documentElement.clientHeight) {
			this.pageYOffset = document.documentElement.scrollTop;
			this.pageXOffset = document.documentElement.scrollLeft;
			this.innerHeight = document.documentElement.clientHeight;
			this.innerWidth = document.documentElement.clientWidth;
		} else if (document.body) {
			this.pageYOffset = document.body.scrollTop;
			this.pageXOffset = document.body.scrollLeft;
			this.innerHeight = document.body.clientHeight;
			this.innerWidth = document.body.clientWidth;
		}
		return this;
	},
	init: function(el) {

		$(el).css("position","Absolute");
		$(el).css("left",Math.round(viewport.o().innerWidth/2) + viewport.o().pageXOffset - Math.round($(el).width()/2));
		$(el).css("top",Math.round(viewport.o().innerHeight/2) + viewport.o().pageYOffset - Math.round($(el).height()/2));
	}
};