function showSample(idstr){ var obj = document.getElementById(idstr); obj.style.display='block'; } 
function hideSample(idstr){ document.getElementById(idstr).style.display='none'; } 
function openHelp4(){ help4_img.src = 'images/arrow_down.gif'; help4_body.style.display = ''; help4_close.style.display = ''; } 

function toggle(idstr){ var objBody = document.getElementById(idstr+'_body'); var objImg = document.getElementById(idstr+'_img'); var objClose = document.getElementById(idstr+'_close'); if (objBody.style.display == 'none'){ objImg.src = 'images/arrow_down.gif'; objBody.style.display = ''; objClose.style.display = ''; } else { objImg.src = 'images/arrow.gif'; objBody.style.display = 'none'; objClose.style.display = 'none'; } } function toggleSample(idstr){ var obj = document.getElementById(idstr); if (obj.style.display == 'none'){ obj.style.display='block'; } else { obj.style.display = 'none'; } }