function selectToUrl(sel) {
     var url = sel.options[sel.selectedIndex].value;
     if (url != '') location.href=url;
     return false;
}

function setLeftVisible(){
   		if (left.width>5){
			document.getElementById("left").style.display="none";
	   		left.width=1;
		}
	   	else {						
			left.width=180;
			document.getElementById("left").style.display="";
		}
   }