function addToList() {

    var selObj = document.getElementById("tratamientos");
    var selIndex = selObj.selectedIndex;
    var item = selObj.options[selIndex].value;


            var oXmlHttp = zXmlHttp.createRequest();
            
            oXmlHttp.open("get", "GetProItem.php?id=" + item, true);
           
            oXmlHttp.onreadystatechange = function () {
            
                if (oXmlHttp.readyState == 4) {
                
                    if (oXmlHttp.status == 200) {
document.getElementById("TratamientosSelect").innerHTML = document.getElementById("TratamientosSelect").innerHTML + oXmlHttp.responseText;
                    
                    } else {
                    
document.getElementById("TratamientosSelect").innerHTML = "An error occurred: " + oXmlHttp.statusText; 

                    }
                    
                }
                           
            };
            
            oXmlHttp.send(null);
            
}


function textToZero (id)
{
var selObj = document.getElementById("Select" + id);
var udObj = document.getElementById("uds"+id);

	if (selObj.checked == false)
	{
	udObj.value = 0;	
	}
}


function markCheck (id) {
var selObj = document.getElementById("Select" + id);
var udObj = document.getElementById("uds"+id);
selObj.checked = true;	
	if (udObj.value == 0)
	{
	selObj.checked = false;	
	}

}