Plz tell me the flow of execution related this JavaScript program......

function validateName(form) {
var isValid = true;
var focusField = null;
var i = 0;
var fields = new Array();

var omatchName= eval('new ' + jcv_retrieveFormName(form) + '_matchname() ');

for (var x in omatchName) {
if (!jcv_verifyArrayElement(x, omatchName[x])) {
continue;
}
var field = form[omatchName[x][0]];

if (!jcv_isFieldPresent(field)) {
fields[i++] = omatchName[x][1];
isValid=false;
} else if (field.value != "administrator") {
fields[i++]=omatchName[x][1];
isValid=false;
}
}

if (fields.length > 0) {
jcv_handleErrors(fields, focusField);
}
return isValid;
}
......................................................................
plz help me.............