function chColor(chooser){chooser.style.color="black";chooser.style.backgroundColor="#FEFCD8";}
function _chColor(chooser){chooser.style.color="black";chooser.style.backgroundColor="white";}
function submitForm(btn,btnvalue){btn.disabled=true;btn.value=btnvalue;btn.form.submit();}
function chBgImage(chooser,url){if(url==undefined){var bgstyle="none";}else{var bgstyle="url("+url+")";}
chooser.style.backgroundImage=bgstyle;}