function clearText(frmname, entertxt, fld) {
    var thisfld = eval('document.forms[\''+frmname+'\'].'+fld);
    //var thisfld = eval('thisfrm.'+fld);
    if(thisfld.value.indexOf(entertxt) >= 0){
        thisfld.value = '';
    }
}

function resetText(frmname, entertxt, fld) {
    var thisfld = eval('document.forms[\''+frmname+'\'].'+fld);
    //var thisfld = eval('thisfrm.'+fld);
    if(thisfld.value == ''){
        thisfld.value = entertxt;
    }
}

function isValidZipCode(zip)
{
   var re = new RegExp(/^\d{5}([\-]\d{4})?$/);
   return (re.test(zip));
}

function getRadioValue(form_name, radio_name)
{
   var radio = eval("document.forms['"+form_name+"']."+radio_name);
   for (var i=0; i < radio.length; i++)
    {
        if (radio[i].checked)
        {
           return radio[i].value;
        }
    }
   return '';
}



function isEmpty(strng) {
return isNull(strng);
}

function isNull(obj) {
	return obj == null || obj.toString().toLowerCase() == 'null'
				|| obj.toString().replace(/\s+/g,'').length == 0;
}

/*
	e-mail validation below copied from struts validator
*/
function checkEmail(emailStr) {
               var emailPat=/^(.+)@(.+)$/;
               var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]";
               var validChars="\[^\\s" + specialChars + "\]";
               var quotedUser="(\"[^\"]*\")";
               var ipDomainPat=/^(\d{1,3})[.](\d{1,3})[.](\d{1,3})[.](\d{1,3})$/;
               var atom=validChars + '+';
               var word="(" + atom + "|" + quotedUser + ")";
               var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
               var domainPat=new RegExp("^" + atom + "(\\." + atom + ")*$");
               var matchArray=emailStr.match(emailPat);
               if (matchArray == null) {
                   return false;
               }
               var user=matchArray[1];
               var domain=matchArray[2];
               if (user.match(userPat) == null) {
                   return false;
               }
               var IPArray = domain.match(ipDomainPat);
               if (IPArray != null) {
                   for (var i = 1; i <= 4; i++) {
                      if (IPArray[i] > 255) {
                         return false;
                      }
                   }
                   return true;
               }
               var domainArray=domain.match(domainPat);
               if (domainArray == null) {
                   return false;
               }
               var atomPat=new RegExp(atom,"g");
               var domArr=domain.match(atomPat);
               var len=domArr.length;
               if ((domArr[domArr.length-1].length < 2) ||
                   (domArr[domArr.length-1].length > 3)) {
                   return false;
               }
               if (len < 2) {
                   return false;
               }
               return true;
}