function checkField(obj) {
	var fld = obj.q;
	var regExp  =  /^\s*$/; 
	var flag = regExp.test(fld.value);	
	if(fld.value =="" || flag) {
		alert("Please enter text in search box");
		document.googleSrch.q.value = fld.value.replace(/^\s*|\s*$/g,"");
		fld.focus();
		return false;
	}
}