function submitForm(para){

	if(para == "select"){
		if(document.forms[0].level.value == ""){
			document.forms[1].key.value=document.forms[0].ca.value; 
		}else{
			document.forms[1].key.value=document.forms[0].ca.value + "_" + document.forms[0].level.value; 
		}

		document.forms[1].submit(); 
	}else{
		document.forms[1].key.value=""; 
		document.forms[0].submit(); 
	}

}