function gebi(id) { return document.getElementById(id); }

function input_fcs(obj,chk,cls) {
	if (obj != undefined) {
		//obj.className = cls;
		if (obj.value == chk) obj.value = '';
	}
}

function input_blr(obj,chk,cls) {
	if (obj != undefined) {
		if (obj.value == '') { 
			obj.value = chk;
			//obj.className = cls;
		}
	}
}

function son(id) {
	var sub = gebi(id);
	if (sub != undefined) sub.className = 'sub on';
}

function sof(id) {
	var sub = gebi(id);
	if (sub != undefined) sub.className = 'sub off';
}

function pov(obj,cls) {
	if (cls == undefined) cls = 'pnt';
	if (obj != undefined) {
		obj.className = cls+' over';
		var num = parseInt(obj.id);
		gebi(num+'_img').src = gebi(num+'_on').src;
		son(num+'_sub');
	}
}

function pou(obj,cls) {
	if (cls == undefined) cls = 'pnt';
	if (obj != undefined) {
		obj.className = cls;
		var num = parseInt(obj.id);
		gebi(num+'_img').src = gebi(num+'_off').src;
		sof(num+'_sub');
	}
}

function docloc(loc) {
	if (loc == undefined) return;
	document.location = loc;
}