var Environment = {
	getWidth : function() {
		if(window.innerWidth && typeof(window.innerWidth) == 'number' )
	    	return window.innerWidth;
	  	if(document.documentElement && document.documentElement.clientWidth)
		    return document.documentElement.clientWidth;
		if(document.body && document.body.clientWidth)
			return document.body.clientWidth;
	},
	getHeight : function() {
		if(window.innerHeight && typeof(window.innerHeight) == 'number' )
	    	return window.innerHeight;
	  	if(document.documentElement && document.documentElement.clientHeight)
		    return document.documentElement.clientHeight;
		if(document.body && document.body.clientHeight)
			return document.body.clientHeight;
	},
	getScrollTop : function() {
		if(window.pageYOffset && typeof(window.pageYOffset) == 'number')
			return window.pageYOffset;
		if(document.body && document.body.scrollTop)
			return document.body.scrollTop;
		if(document.documentElement && document.documentElement.scrollTop)
			return document.documentElement.scrollTop;
		return -1;
	},
	getScrollLeft : function() {
		if(window.pageXOffset && typeof(window.pageXOffset) == 'number')
			return window.pageXOffset;
		if(document.body && document.body.scrollLeft)
			return document.body.scrollLeft;
		if(document.documentElement && document.documentElement.scrollLeft)
			return document.documentElement.scrollLeft;
		return -1;
	}
}