function obi(objn){return document.getElementById(objn);}
function showhide(id){obj=obi(id);obj.style.display=(obj.style.display=="none")?"":"none";}
function show(id){obi(id).style.display="";}
function hide(id){obi(id).style.display="none";}
function sel_txt(obj){obj.focus();obj.select();}
function str_replace(needle,replacement,haystack){var temp=haystack.split(needle);return temp.join(replacement);}