function validate(){
}

function select_value(sel_name, val){
	$("select[name='"+ sel_name+"']").val(val);
}

function only_numbers(event){
	var c = event.keyCode;
	var allowed = [8,9,13,37,38,39,40,46,48,49,50,51,52,53,54,55,56,57];
	if($.inArray(c, allowed) == -1){
		if(event.preventDefault) event.preventDefault()
		if(event.stopPropagation) event.stopPropagation();
		return false;
	}
}

$(document).ready(function(){
	$("input[name='tickets']")
		.bind("keydown", only_numbers)
		;
});