function gi(val){return document.getElementById(val);}
function show(idLayer) { gi(idLayer).style.display='block'; }
function hide(idLayer) { gi(idLayer).style.display='none'; }
function showInline(idLayer) { gi(idLayer).style.display='inline'; }
function rs_clear(idLayer){ gi(idLayer).innerHTML="";}
function change(id, newClass) {identity=gi(id); identity.className=newClass;}
function round( val, precision ) {return parseFloat(parseFloat(val).toFixed(precision));}