function fldchng(fld,val,type){
	obj=return_by_id(fld);
	switch(type) {
		case 'clr': if(obj.value==val) obj.value=''; break;
		case 'def': if(obj.value=='') obj.value=val; break;
		case 'html': obj.innerHTML=val; break;
		default: obj.value=val; break;
	}
}