function init(){
	// search
	var search = document.vyhledavani.h_vyraz;
	search.onclick = new Function("if(this.value=='Vyhledat...') this.value=''");
	search.onfocus = new Function("if(this.value=='Vyhledat...') this.value=''");
	// cam
	var cam1 = document.getElementById('wecam');
	cam1.onmouseover = new Function("cam(true)");
	cam1.onmouseout = new Function("cam(false)");
	var cam2 = document.getElementById('kamery');
	cam2.onmouseover = new Function("cam(true)");
	cam2.onmouseout = new Function("cam(false)");
}

var timcam;
function cam(show){
	clearInterval(timcam); 
	if(show){
		document.getElementById('kamery').style.visibility = 'visible';
	}else{
		timcam = setInterval("camhidden()", 1000);
	}
}
function camhidden(){
	clearInterval(timcam);
	document.getElementById('kamery').style.visibility = 'hidden';
}

window.onload = init;