function Round5(x){return 5*Math.round(x/5)}
function Round10s(x){return Math.round(x*8640)/8640}
function powerGrowth(b,l,c){return b*Math.pow(c,l)}
function sum(a){var r=0;for(i=a.length-1;i>=0;i--){r+=a[i]}return r}