but11 = new Image();
but11.src = "/pictures/but1_1.gif"
but12 = new Image();
but12.src = "/pictures/but1_2.gif"

but21 = new Image();
but21.src = "/pictures/but2_1.gif"
but22 = new Image();
but22.src = "/pictures/but2_2.gif"

but31 = new Image();
but31.src = "/pictures/but3_1.gif"
but32 = new Image();
but32.src = "/pictures/but3_2.gif"

but41 = new Image();
but41.src = "/pictures/but4_1.gif"
but42 = new Image();
but42.src = "/pictures/but4_2.gif"

but51 = new Image();
but51.src = "/pictures/but5_1.gif"
but52 = new Image();
but52.src = "/pictures/but5_2.gif"

but61 = new Image();
but61.src = "/pictures/but6_1.gif"
but62 = new Image();
but62.src = "/pictures/but6_2.gif"



opera = (navigator.userAgent.indexOf('Opera') >= 0)? true : false;
dom = (document.getElementById)? true : false;
ie4 = (document.all && !dom)? true : false;
nn4 = (document.layers)? true : false;

function getElement( elemId )
{
    if (dom)
        return document.getElementById(elemId);
    else
        if (ie4)
            return document.all[elemId];
        else
            if (nn4)
                return document.layers[elemId];
    return null;
} 

function showElem(elemId)
{
	if (dom) document.getElementById(elemId).style.visibility = "visible";
	else if (ie4) document.all[elemId].style.visibility = "visible";
	else if (nn4) document.layers[elemId].visibility = "show";
}
function hideElem(elemId)
{
	if (dom) document.getElementById(elemId).style.visibility = "hidden";
	else if (ie4) document.all[elemId].style.visibility = "hidden";
	else if (nn4) document.layers[elemId].visibility = "hide";
}
function putElem(elemId) {
	if (dom) document.getElementById(elemId).style.display = "block";
	else if (ie4) document.all[elemId].style.display = "block";
}
function removeElem(elemId) {
	if (dom) document.getElementById(elemId).style.display = "none";
	else if (ie4) document.all[elemId].style.display = "none";
}

function showHideDiv(divname){
	if (getElement(divname).style.display=='none'){
		getElement(divname).style.display='block';
		return 1;
	}
	else {
		getElement(divname).style.display='none';
		return 1;
	}

}