function clickclear(thisfield, defaulttext) {
  if (thisfield.value == defaulttext) { thisfield.value = ""; }
}

function clickrecall(thisfield, defaulttext) {
  if (thisfield.value == "") { thisfield.value = defaulttext; }
}

function HideContent(d) {
  if(d.length < 1) { return; } 
  document.getElementById(d).style.display = "none";
}
function ShowContent(d) {
  if(d.length < 1) { return; }
  document.getElementById(d).style.display = "block";
}
function ReverseContentDisplay(d) {
  if(d.length < 1) { return; }
  if(document.getElementById(d).style.display == "none") { document.getElementById(d).style.display = "block"; }
  else { document.getElementById(d).style.display = "none"; }
}

function ReSize(imgname,w,h,sw,sh){
 var imgs=document.body.getElementsByTagName(imgname);
 var img=imgs[imgs.length-1];
 if (img.width>sw){
  img.width=sw;
  img.height=sh;
 } else {
  img.width=w;
  img.height=h;
 }
}