jQuery.noConflict();

jQuery(document).ready(function() {
    jQuery('input').change(function(event) {
        var str = event.currentTarget.value.replace(RegExp("<", "g"), " ");
        str = str.replace(RegExp(">", "g"), " ");
        if (event.currentTarget.value != str) {
            event.currentTarget.value = str;
            alert('You entered an invalid character.');
        }
    });

    jQuery('input').keypress(function(event) {
        if ((event.charCode == 60) || (event.charCode == 62) || (event.keyCode == 60) || (event.keyCode == 62)) {
            alert('You entered an invalid character.');
            return false;
        }
    });

    jQuery('textarea').change(function(event) {        
        var str = event.currentTarget.value.replace(RegExp("<", "g"), " ");
        str = str.replace(RegExp(">", "g"), " ");
        if (event.currentTarget.value != str) {
            event.currentTarget.value = str;
            alert('You entered an invalid character.');
        }
    });

    jQuery('textarea').keypress(function(event) {
        if ((event.charCode == 60) || (event.charCode == 62) || (event.keyCode == 60) || (event.keyCode == 62)) {
            alert('You entered an invalid character.');
            return false;
        }
    });

});