function echeck(str) {
var at="@"
var dot="."
var lat=str.indexOf(at)
var lstr=str.length
var ldot=str.indexOf(dot)
/* check for missing at */
if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
return false
}
/* check for missing dot */
if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
return false
}
/* check for multiple at */
if (str.indexOf(at,(lat+1))!=-1){
return false
}
/* check for at and dot side by side */
if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
return false
}
/* check for dot AFTER at -- wouldn't compare of lat and ldot work better? */
if (str.indexOf(dot,(lat+2))==-1){
return false
}
/* check for any spaces */
if (str.indexOf(" ")!=-1){
return false
}
return true
}
function checkemail(toCheck){
if ((toCheck.value==null)||(toCheck.value=="")){
return true
}
if (echeck(toCheck.value)==false){
alert("The address you entered is not a valid email address. If you do not have a valid email address, leave it blank.");
/* toCheck.focus(); this does not work for some reason */
/* toCheck.value=""; this is rude */
return false;
}
return true
}