if( -1 != navigator.userAgent.indexOf ("MSIE") )
{
	//alert( 'omggggggggg IE' );
}
else if( -1 != navigator.userAgent.indexOf ("Mozilla") )
{
	//alert( 'omggggggggg MOOOOZILLA' );
}
else
{
	//alert( 'omg unknown ('+navigator.userAgent+')' );
}