function checkValidId(formId,fieldId){
	var f;
	var o;
	
	if(document.getElementById) f = document.getElementById(formId);
	else if(document.all) f = document.all[formId];	
	else if(document.layers) f = document.layers[formId];
	
	o=f.elements[fieldId].value;
	
	if(o!=-1){
		f.submit();
	}
}