function openList(sIdent){
		if(document.getElementById(sIdent)){
			if(document.getElementById(sIdent).style.display=='none' || document.getElementById(sIdent).style.display==''){
				document.getElementById(sIdent).style.display='block';
				document.getElementById(sIdent+'image').innerHTML='-';
			}else{
				document.getElementById(sIdent).style.display='none';
				document.getElementById(sIdent+'image').innerHTML='+';
			}
		}
	}