//here you place the ids of every element you want.
var ids=new Array('a1','a2','a3','a4', 'a5', 'a6');

function switchid(id){	
	hideallids();
	showdiv(id);
}

function hideallids(){
	//loop through the array and hide each element by id
	for (var i=0;i<ids.length;i++){
		hidediv(ids[i]);
	}		  
}

function hidediv(id) {
	//safe function to hide an element with a specified id
	if (document.getElementById)  { // DOM3 = IE5, NS6
		if(document.getElementById("wi_tab"+id) && document.getElementById(id)){
            document.getElementById(id).style.display = 'none';
			document.getElementById("wi_tab"+id).className = "";
		}
	}
	else {
		if (document.layers) { // Netscape 4
            document.id.display = 'none';
		}
		else { // IE 4
			document.all.id.style.display = 'none';
		}
	}
}

function showdiv(id) {
	//safe function to show an element with a specified id
		  
	if (document.getElementById) { // DOM3 = IE5, NS6
		if(document.getElementById("wi_tab"+id) && document.getElementById(id)){
            document.getElementById(id).style.display = 'block';
			document.getElementById("wi_tab"+id).className = "wi_sel";
		}
	}
	else {
		if (document.layers) { // Netscape 4
            document.id.display = 'block';
		}
		else { // IE 4
			document.all.id.style.display = 'block';
		}
	}
}

function trim(stringToTrim) {
    if(stringToTrim == undefined)
        return "";
	return stringToTrim.replace(/^\s+|\s+$/g,"");
}