function rsi(){
if (self.innerHeight) {
		windowWidth = (this.isFrame) ? parent.innerWidth : self.innerWidth;
		windowHeight = (this.isFrame) ? parent.innerHeight : self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) {
		windowWidth = this.doc.documentElement.clientWidth;
		windowHeight = this.doc.documentElement.clientHeight;
	} else if (document.body) {
		windowWidth = this.doc.getElementsByTagName("html").item(0).clientWidth;
		windowHeight = this.doc.getElementsByTagName("html").item(0).clientHeight;
		windowWidth = (windowWidth == 0) ? this.doc.body.clientWidth : windowWidth;
		windowHeight = (windowHeight == 0) ? this.doc.body.clientHeight : windowHeight;
	}
if (windowWidth<= 800)	{
document.getElementById('left').style.display = 'none';
document.getElementById('content').style.backgroundImage = 'none';


}
}