isDbg = true;
	function dbg_alert(str){
		if(isDbg) alert(str);
	}

	function foco_getElement(strElement){
		//dbg_alert(strElement);
		el = document.getElementById(strElement);
		//if(el == null) dbg_alert('null object'); 
				
		return el;		
	}
	
	function foco_addOption(slt, text, value){
 	  newElem = document.createElement("option");
    newElem.text = text;
    newElem.value = value;
    slt.add(newElem); 		
	}