function ckEnter(event)
{ 	
 NS4 = (document.layers) ? true : false;
 var code = 0;
	
 if (NS4)
 {
  code = event.which;
 }
 else
 {
  code = event.keyCode;
  if (code==13)
  {
   event.keyCode = "";
  }
 }
}

function checkEnter(event)
{ 	
 var code = 0;
 NS4 = (document.layers) ? true : false;
	
 if (NS4)
 {
  code = event.which;
 }
 else
 {
  code = event.keyCode;
  if (code==13)
  {
   event.keyCode = "";
   dosave();
  }
 }
}

function trim(s) {
  while (s.substring(0,1) == ' ') {
    s = s.substring(1,s.length);
  }
  while (s.substring(s.length-1,s.length) == ' ') {
    s = s.substring(0,s.length-1);
  }
  return s;
}
function notChecked( box )
{
    if( box.checked ){
        return false;
    }
    else{
        return true;
    }
} 

function highlightButtons(button, whatEvent)
{
 if (whatEvent == 'over')
 {
  button.style.color = 'black';
  button.style.backgroundColor = "darkgray";
 }
 else
 {
  button.style.backgroundColor = 'lightgrey';
  button.style.color = "black";
 }
}

function emailcheck(str) 
{
		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    return false
		 }

 		 return true					
}