/* Check to see if it is Internet Explorer (4.x) */
	if ( document.all ) {
   	layerRef = 'document.all.'
   	styleRef = '.style.visibility' // you can change visibility to a different property
	sDiv = '"visible"'
	hDiv = '"hidden"'
}
/* Check to see if it is Netscape (4.x) */
	if ( document.layers ) {		// document.layer3.visibility="hide"
   	layerRef = 'document.'
   	styleRef = '.visibility'		// you can change visibility to a different property
	sDiv = '"show"'
	hDiv = '"hide"'
}

actual="0";

function tanca(NumMenu){
	eval(layerRef+'menu'+NumMenu+styleRef+'='+hDiv);
}

function obre(NumMenu){
	if(actual!="0"){ tanca(actual); }
	actual=NumMenu;
	eval(layerRef+'menu'+NumMenu+styleRef+'='+sDiv);
}

function ventana(c)
	{
	window.open(c ,"popWindow", "scrollbars=yes,location=no,menubar=no,width=410,height=300")
}