function setMapTrigger(layerName) {
	var isIE = navigator.appName.indexOf("Microsoft") != -1;  
	
	window.onscroll = function(e) {
		var sp = (document.body.scrollTop != 0)? document.body.scrollTop : ((window.pageYOffset)? window.pageYOffset : ((document.body.parentElement) ? document.body.parentElement.scrollTop : 0));

		if (document.documentElement.clientHeight + sp >= bilh.getAbsolutePosition(layerName).y + document.getElementById(layerName).offsetHeight - ((isIE)? 100: 150)) {
			document["technomapFlash"].showRegions(); 
			window.onscroll = null;
		}
		
	}
}