function showTargetGroups (){
	no = document.sme_search.search_by.selectedIndex;
 result = document.sme_search.search_by.options[no].value;
 if(result == "target_group")
 	{
		document.sme_search.targetgroups.style.display="inline";
		
	}
	else{
		document.sme_search.targetgroups.style.display="none";
		
	}
	   
    
}