function setItemValue(item, value){
	item.value=value;	
}
function selectAll(form, chk, chkId){ 	 	
 	for(i=0, n=form.elements.length; i<n; i++){
 		if(form.elements[i].id == chkId){
 			form.elements[i].checked = chk.checked;
 		}
	}
}