var mikExp = /[$\\@\\\#%\^\&\*\[\]\+\_\{\}\<\>\`\~\=\|]/;
function dodacheck(val) {
var strPass = val.value;
var strLength = strPass.length;
var lchar = val.value.charAt((strLength) - 1);
if(lchar.search(mikExp) != -1) {
var tst = val.value.substring(0, (strLength) - 1);
val.value = tst;
   }
}
function doanothercheck(form) {
if(form.value.length < 1) {
alert("Please enter something.");
return false;
}
if(form.value.search(mikExp) == -1) {
alert("Correct Input");
return false;
}
else {
alert("Sorry, but the following characters\n\r\n\r@ $ % ^ & * # ( ) [ ] \\ { + } ` ~ =  | \n\r\n\rare not allowed!\n");
form.select();
form.focus();
return false;
}
alert("Correct Input");
return false;
}