function bgimg(){
	var fade=0;
	var logo=document.getElementById('main_bg').style;
	var ms=(logo.opacity==0)?0:1;
	var pace=setInterval(Fade,1);
	
	function Fade(){
		if(fade<100){
			fade+=10;
			if(ms) {
				logo.filter='alpha(opacity='+fade+')';
			} else { 
				logo.opacity=(fade/100);
			}
		} else {
			clearInterval(pace)
		}
	}
	return false;
}