function SelectAll(mark, Mname){
if(mark){document.listmessages.elements['int'].checked="";
document.listmessages.elements['all'].checked="";};
for(i = 0; i < document.listmessages.elements.length; i++){var item=document.listmessages.elements[i]; if(item.name == Mname){item.checked = mark;};}
}

function nonSelectAll(mark, Mname, Aname){
if(mark){document.listmessages.elements['int'].checked="";
document.listmessages.elements['all'].checked="";};
var f=0; var kol=0; 
for(i = 0; i < document.listmessages.elements.length; i++){var item=document.listmessages.elements[i];	 if(item.name == Mname){kol=kol+1; if(item.checked !=""){f=f+1;};};};
for (i = 0; i < document.listmessages.elements.length; i++){var item=document.listmessages.elements[i];if (item.name == Aname){if (item.checked){if(f==1){item.checked = "";} else {item.checked = mark;};}else{if (f==kol){item.checked = mark;};};};};
}



function SelectionOnly(mark, Mname){
if(mark){
for ( var i = 0; i < document.listmessages.elements.length; i++){
var item=document.listmessages.elements[i];
if(item.name.substring(0, 2) == Mname){item.checked=""};
};
};
}