var agt=navigator.userAgent.toLowerCase();
var is_major = parseInt(navigator.appVersion);
var is_minor = parseFloat(navigator.appVersion);
var is_ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
var is_ie6 = (is_ie && (is_major == 4) && (agt.indexOf("msie 6.")!=-1) ) || ( is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")!=-1) ) ;

function updateHeight( obj1, obj2 ) {
	if( !obj1 || !obj2 ) return;
	var h = Math.max( obj1.offsetHeight, obj2.offsetHeight );
	obj1.style.height = obj2.style.height = h + "px"; 
}
    
    
function updatePng() {
	try {
	updateHeight( document.getElementById( "m_serwis_infop" ), document.getElementById( "m_pytania" ) );
	} catch(e) { alert( e ); }  

	var t = document.getElementById( 'main_top_pic' );
	if( !t ) return ;
	
	if( is_ie6 ) {
		var img = t.src;
		t.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + img + "', sizingMethod=image)";
		t.src= "webapps/cms-site/html/img_obslugaubezpieczen/0.gif";
	}
	
	t.style.visibility = "visible";
}
function clearDefault( field )
{
    if( field.defaultValue == field.value ) field.value = "";
}
var grab;
if (document.getElementById)
{
    grab = function(o) { return document.getElementById(o); }
}
else if (document.all)
{
    grab = function(o) { return document.all[o]; }
}
else
{
    grab = function() { return { style:{} }; }
}