function setBkgd(){
	aWin=getWinSize();
	oFt=document.getElementById('ftr');
	aFt=findPosition(oFt);
	var iHt=aWin[1];
	var iFt=aFt[1];
	if(iHt>iFt){
		var iH=iHt/divisor;
		var tH=iH+'%';
		document.body.style.marginBottom=tH;
		if(home==1){
			document.body.style.marginTop=tH;
		}
	}
}
setBkgd();