function isString(str) {
	pattern = /^[a-zA-Z0-9\s\(\)\+\/\-\']+$/
	
	
	if (!str.match(pattern)) return false
	else return true;
}

function isEmpty(inputStr) {
	if ((inputStr == null) || (inputStr=="")) return true
	else return false
}
function checkSearch(form) {

str = topsearch.qu.value
if (isEmpty(str) || !isString(str)) {
	alert("Search cannot be blank and must be a valid entry");
	return false;
}
return true;
	  
}