var isDOM=document.getElementById; //DOM1 browser (MSIE 5+, Netscape 6, Opera 5+) 
var isMSIE=document.all && document.all.item; //Microsoft Internet Explorer 4+ 
var isNetscape4=document.layers; //Netscape 4.* 
var isOpera=window.opera; //Opera  
var isMozilla=isNetscape6=isDOM && !isMSIE && !isOpera; 
mousex = 0;
mousey = 0;
 
function showhint(e, idd)
		{	
			if(isMSIE)
			{
				mousex=e.clientX+document.body.scrollLeft;
				mousey=e.clientY+document.body.scrollTop;
			}
			if(isOpera)
			{
				mousex=e.clientX+document.body.scrollLeft;
				mousey=e.clientY+document.body.scrollTop;
			}

			else if(isNetscape4 || isMozilla)
			{
				mousex = e.pageX
				mousey = e.pageY
			}
			//alert(mousex);
			var obj=document.getElementById('ff');
			if (idd=='images/karta.jpg') {obj.style.width = 655+ 'px';}
			document.getElementById('img_big').src=idd; 
			obj.style.visibility = 'visible';
			obj.style.left = 400+ 'px';
			obj.style.top = mousey-100+ 'px';
		}
		function hidehint()
		{
			
			document.getElementById('ff').style.visibility = 'hidden';
			document.getElementById('ff').style.top=0+'px';

		}