dom.event.addEventListener(window, 'load', initDocument);
var pnmclsz="";
    function initDocument() {
    hiddenpnm = document.getElementById('pnm');
    selectcl = document.getElementById('cl');
    selectsz = document.getElementById('sz');
    pnmclsz = hiddenpnm.value + selectcl.value + selectsz.value;
    
    dom.event.addEventListener(selectcl, 'change', clChange);
    dom.event.addEventListener(selectsz, 'change', szChange);
	}
    function clChange(evt) {
    selectcl = dom.event.target(evt);
    pnmclsz = hiddenpnm.value + selectcl.value + selectsz.value;    
    }
    function szChange(evt) {
    selectsz = dom.event.target(evt);
    pnmclsz = hiddenpnm.value + selectcl.value + selectsz.value;
    }