function validate_search() {
	var fromcity=document.frm_srch.fromcity.value;
	var tocity=document.frm_srch.tocity.value;
	var depdate=document.frm_srch.depdate.value;
	var retdate=document.frm_srch.retdate.value;
	missinginfo = "";
	if (fromcity==""){
		missinginfo += "\n - Please enter departure city";
	 }
	 if (tocity==""){
		missinginfo += "\n - Please enter destination city";
	 }
	  if (depdate==""){
		missinginfo += "\n - Please select departure date";
	 }

	
	if (missinginfo != "") 
	{
		missinginfo ="__________________________________\n" +
		"Required information is missing: \n" +
		missinginfo + "\n__________________________________" +
		"\nPlease check and resubmit";
		alert(missinginfo);
		return false;
	}
	
	return true;
}