String.prototype.trim = function() {
	return this.replace(/^\s+|\s+$/g,"");
}

function adSearchOnClick() {
	var pcSearchInput = document.forms['search'].f_search;
	if (pcSearchInput.value.trim().length < 3) {
		alert("3 characters minimum");
		pcSearchInput.focus();
		return false;
	}
	else {
		if (pcSearchInput.value != 'Search') {
			return true;
		}
		else {
			alert("3 characters minimum");
			pcSearchInput.value = '';
			pcSearchInput.focus();
			return false;
		}
	}
}

function adClearInput() {
	var adSearch = document.forms['search'].f_search;
	if (adSearch.value == 'Search') {
		adSearch.value='';
	}
}