function clearOption(type) {
		if (type==1) { 
			selectObject = document.getElementById("origenCode");
		} else {
			selectObject = document.getElementById("desde");		
		}

		for (var i=selectObject.options.length-1; i>=0; i--){
		  selectObject.options[i] = null;
		}
	    selectObject.options.selectedIndex = -1;
	}

	function addOption(type, optionText,optionValue) {
		if (type==1) { 
			selectObject = document.getElementById("origenCode"); 
		} else {
			selectObject = document.getElementById("desde");		
		}
	    var optionObject = new Option(optionText,optionValue);
	    var optionRank = selectObject.options.length;
	    selectObject.options[optionRank]=optionObject;
	}


	function changeDestination () {
		xProvince = document.getElementById("destCode");
		document.getElementById("submiter").src="js-destinations.php?code="+xProvince[xProvince.selectedIndex].value+"&s="+Math.random(100000);
	}