function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function hide_div(name) {
	if (document.layers) {
		top.window.contentframe.navi.document[name].visibility = 'hide';
	} else {
		if (document.all) {
			top.window.contentframe.navi.document.all[name].style.visibility = 'hidden';

		} else {
			if (document.getElementById) {
				top.window.contentframe.navi.document.getElementById(name).style.visibility='hidden';
			}
		}
	}
}

function show_div(name) {
	if (document.layers) {
		top.window.contentframe.navi.document[name].visibility = 'show';
	} else {
		if (document.all) {
			top.window.contentframe.navi.document.all[name].style.visibility = 'visible';

		} else {
			if (document.getElementById) {
				top.window.contentframe.navi.document.getElementById(name).style.visibility='visible';
			}
		}
	}
}

var cur_hl;

// bilder wechseln
function hl_bild(was) {
	//alert("bild: "+was);
	document.images.navimg.src='../images/zeichnungen/'+ was +'.gif';
}

// navitem hovern
function hl_text(was) {
	activelink(cur_hl);
	hoverlink(was);
}

// hover fuer bild
function mausrein(was) {
	hl_bild(was);
	hl_text(was);
}

function mausraus(was) {
	normallink(was);

	hl_bild(cur_hl);
	activelink(cur_hl);
}

function activelink(was) {
	if (document.getElementById(was)) {
		document.getElementById(was).style.fontWeight='bold';
		document.getElementById(was).style.color='#000000';
		document.getElementById(was).style.textDecoration='underline';
	}
}

function normallink(was) {
	if (document.getElementById(was)) {
		document.getElementById(was).style.fontWeight='normal';
		document.getElementById(was).style.color='#000000';
		document.getElementById(was).style.textDecoration='underline';
	}
}

function hoverlink(was) {
	if (document.getElementById(was)) {
		document.getElementById(was).style.fontWeight='bold';
		document.getElementById(was).style.color='#900000';
		document.getElementById(was).style.textDecoration='none';
	}
}

function openwin(pic) {
	window.open('zoom.php?pic='+pic,'ZOOM','width=630,height=628,dependent=yes,scrollbars=no,resizable=no');

}