function BigPhotoOpen(imgn) {
	if (ns6) {
		ypos = innerHeight;
		ypos = ((ypos/2) - (578/2)) + pageYOffset;
		if (ypos < 1) ypos = 50;
		xpos = innerWidth;
		xpos = (xpos/2) - (771/2);
		if (xpos < 1) xpos = 50;
		document.getElementById("phc_bigphoto").style.position='absolute';
		document.getElementById("phc_bigphoto").style.width="100%";
		document.getElementById("phc_bigphoto").style.height="100%";
		document.getElementById("phc_bigphoto").style.left="0px";
		document.getElementById("phc_bigphoto").style.top="0px";
		document.getElementById("phc_bigphoto").innerHTML='<a href="JavaScript:BigPhotoClose();"><img src="http://www.akvaristika.net/img/phc5/'+imgn+'.jpg" width="771" height="578" alt="Okno zav&#345;ete kliknut&#237;m na obr&#225;zek." title="Okno zav&#345;ete kliknut&#237;m na obr&#225;zek." style="margin-top:'+ypos+'px;" /></a>';
		}
	else if (ie) {
		ypos = document.body.offsetHeight;
		ypos = ((ypos/2) - (578/2) + document.body.scrollTop);
		if (ypos < 1) ypos = 50;
		xpos = document.body.offsetWidth;
		xpos = (xpos/2) - (771/2);
		if (xpos < 1) xpos = 50;
		document.all("phc_bigphoto").style.left="0px";
		document.all("phc_bigphoto").style.top="0px";
		document.all("phc_bigphoto").style.position='absolute';
		document.all("phc_bigphoto").style.width=(document.body.offsetWidth-21)+"px";
		document.all("phc_bigphoto").style.height=document.body.offsetHeight+"px";
		document.all("phc_bigphoto").innerHTML='<a href="JavaScript:BigPhotoClose();"><img src="http://www.akvaristika.net/img/phc5/'+imgn+'.jpg" width="771" height="578" alt="Okno zav&#345;ete kliknut&#237;m na obr&#225;zek." title="Okno zav&#345;ete kliknut&#237;m na obr&#225;zek." style="margin-top:'+ypos+'px;" /></a>';
		}
	}
function BigPhotoClose() {
	if (ns6) {
		document.getElementById("phc_bigphoto").style.position='relative';
		document.getElementById("phc_bigphoto").style.width="0px";
		document.getElementById("phc_bigphoto").style.height="0px";
		document.getElementById("phc_bigphoto").style.left="";
		document.getElementById("phc_bigphoto").style.top="";
		document.getElementById("phc_bigphoto").innerHTML='';
	}
	if (ie) {
		document.all("phc_bigphoto").style.position='relative';
		document.all("phc_bigphoto").style.width="0px";
		document.all("phc_bigphoto").style.height="0px";
		document.all("phc_bigphoto").style.left="";
		document.all("phc_bigphoto").style.top="";
		document.all("phc_bigphoto").innerHTML='';
	}
}