function opmen()
{
	var i;
	
	//gets the location variables
	var query_string = new String(this.location.href.split("?")[1]);
	
	var vars = query_string.split("&");
	
	var mymodule = null;
	
	//gets the module variable if it exists
	for (i = 0; i < vars.length; i++) {
		if (vars[i].indexOf('module=' >= 0)) {
			mymodule = vars[i].replace("module=", "");
			break;
		}
	}
	
	if (mymodule == null || !document.getElementById(mymodule) || !document.getElementById(mymodule + "_href")){
		return false;
	}
	document.getElementById(mymodule).style.display = "block";
	document.getElementById(mymodule + "_href").style.display = "none";
	
	return false;
}

function showMenu(whichMenu, state){
	
	menuOn = whichMenu;
	menuOff = whichMenu +'_href';
	
	if  (state){
		document.getElementById(menuOn).style.display ='block';
		document.getElementById(menuOff).style.display ='none';
	}
	else {
		document.getElementById(menuOn).style.display ='none';
		document.getElementById(menuOff).style.display ='block';
	}
	
}