function divstart_x (id,topx,leftx,width,topkorr,leftkorr)		// width = Layerbreite - korr = Korrektur (Opera)
{
// alert (id + " " + topx + " " + leftx + " " + width);
var back = 0;
var down = 0;

if (leftx == -1) leftx = width/2 + 230;			// exakte Mitte gewüscht (Parameter back -1 gesetzt)

   if (navigator.appVersion.charAt(0)<'4') { alert ("Error"); back = 156; down = 2; }
   else { if (navigator.appName=='Netscape') { back = leftx - 20; down = 2;  }					// 156
        if (navigator.appName=='Microsoft Internet Explorer')    { back = leftx;  }

// alert (document.body.offsetHeight);
        if (navigator.appName=='Opera' && document.body.offsetHeight>=735)    { back = leftx - Number(leftkorr) - 10; down = 7 + Number(topkorr); }
        if (navigator.appName=='Opera' && document.body.offsetHeight<=734)  { back = leftx - 2; down = 7;}
   }

// alert (id + " " + topx + " " + back + " " + width);

var position = (document.body.offsetWidth)/2 - back;
var top = Number(topx) + down;

document.write("<div id='" + id + "' style='background-color:white; width:" + width + "px; height:485px; position:absolute; left:" + position + "px; top:" + top + "px; z-index:1; visibility:hidden; layer-background-color:white;'>");
}