/*
functions for validate registration form
*/


function ltrim(str)
/***
        PURPOSE: Remove leading blanks from string.
***/
{
        var whitespace = new String(" \t\n\r");
        var s = new String(str);
        if (whitespace.indexOf(s.charAt(0)) != -1) {
            var j=0, i = s.length;
            while (j < i && whitespace.indexOf(s.charAt(j)) != -1)
                j++;
            s = s.substring(j, i);
        }
        return s;
}

function rtrim(str)
/***
        PURPOSE: Remove trailing blanks from our string.
***/
{
        var whitespace = new String(" \t\n\r");
        var s = new String(str);
        if (whitespace.indexOf(s.charAt(s.length-1)) != -1) {
            var i = s.length - 1;       // Get length of string
            while (i >= 0 && whitespace.indexOf(s.charAt(i)) != -1)
                i--;
            s = s.substring(0, i+1);
        }
        return s;
}

function trim(str)
/***
        PURPOSE: Remove trailing and leading blanks from our string.
***/
{
        return rtrim(ltrim(str));
}




function validEmail(email) 
{ 
    if (email == ""){return false;} 
    badStuff = ";:/,' \"\\"; 
     
    for (i=0; i<badStuff.length; i++) 
    { 
        badCheck = badStuff.charAt(i) 
        if (email.indexOf(badCheck,0) != -1){return false;} 
    } 

    posOfAtSign = email.indexOf("@",1) 
     
    if (posOfAtSign == -1){return false;} 

    if (email.indexOf("@",posOfAtSign+1) != -1){return false;} 
    posOfPeriod = email.indexOf(".", posOfAtSign) 
     
    if (posOfPeriod == -1){return false;} 
    if (posOfPeriod+2 > email.length){return false;} 
     
return true; 
}