function clearText(thefield){
	if (thefield.defaultValue==thefield.value)
	thefield.value = ""
} 


//keresobox 
var boxname = "sboxextra";
function down(px) {
	if (px<200) {
		document.getElementById(boxname).style.height=px+"px";
		px=px+10;
		setTimeout("down("+px+")", 5);
	}
}

function sOut() {
	document.getElementById(boxname).style.display="block"; 
	document.getElementById(boxname).style.height="0px";
	down(5);
}

function sIn() {
	document.getElementById(boxname).style.display="none"; 
}

function changeCheck(obj) {
	elms=document.forms['search'].elements;
	if(obj.name=="t[0]") {
		for (i=1;i<8;i++) 
			if(elms["t["+i+"]"].type=="checkbox") {
				elms["t["+i+"]"].checked=0;
			}
	} else if(elms["t[0]"].checked==1) {
			elms["t[0]"].checked=0;
		}
	return;
}