rozwin_off = new Image();
rozwin_off.src = "img/but_rozwin_off.gif";
rozwin_on = new Image();
rozwin_on.src = "img/but_rozwin_on.gif";


function select(imgName) {
	imgOn = eval(imgName + "_on.src");
	document[imgName].src = imgOn;
}

function unselect(imgName) {
	imgOff = eval(imgName + "_off.src");
	document[imgName].src = imgOff;
}

var browser = checkBrowser();

function checkBrowser(){
	var is_major=parseInt(navigator.appVersion);
	this.nver=is_major;
	this.ver=navigator.appVersion;
	this.agent=navigator.userAgent;
	this.dom=document.getElementById?1:0;
	this.opera=window.opera?1:0;
	this.ie5=(this.ver.indexOf("MSIE 5")>-1&&this.dom&&!this.opera)?1:0;
	this.ie6=(this.ver.indexOf("MSIE 6")>-1&&this.dom&&!this.opera)?1:0;
	this.ie4=(document.all&&!this.dom&&!this.opera)?1:0;
	this.ie=this.ie4||this.ie5||this.ie6;
	this.ns6=(this.dom&&parseInt(this.ver)>=5)?1:0;
	this.hotjava=(this.agent.toLowerCase().indexOf('hotjava')!=-1)?1:0;
	this.ns4=(document.layers&&!this.dom&&!this.hotjava)?1:0;
	this.bw=(this.ie6||this.ie5||this.ie4||this.ns4||this.ns6||this.opera);
	return this;
}

function createStartLayer(name,z,left,top,width,height){
	document.write(browser.ns4?'<layer id="'+name+'" z-index="'+z+'" left="'+left+'" top='+top+'" width="'+width+'" height="'+height+'"'+' visibility="hidden">\n':'<div id="'+name+'" style="position:absolute;z-index:'+z+';left:'+left+'px;top:'+top+'px;width:'+width+'px;height:'+height+'px;visibility:hidden;">\n');
} 

function createEndLayer(){
	document.write(browser.ns4?'</layer>\n':'</div>\n');
} 

function changeLayerVisibility(name,action) {
	switch(action) {
		case "show":var state=browser.ns4?'show':'visible';break;
		case "hide":var state=browser.ns4?'hide':'hidden';break;
	}
	browser.ns4?document.layers[name].visibility=state:document.all?document.all[name].style.visibility=state:document.getElementById(name).style.visibility=state;
}

function changeLinkColor(name,colorValue) {
	browser.ie?eval(name+".style.color='"+colorValue+"'"):'';
	browser.opera?eval(name+".style.color='"+colorValue+"'"):'';
	browser.ns6?eval("document.getElementById('"+name+"').style.color='"+colorValue+"'"):'';
}

function newWindow(width,height,filename) {
	var winWidth = (screen.width - width) / 2;
	var winHeight = (screen.height - height) / 2;
	winprops = 'width='+width+',height='+height+',top='+winHeight+',left='+winWidth+',scrollbars=0';
	window.open(filename,'pcnewwindow',winprops);
}

function changeImg(imgName,dest) {
	document[dest].src = eval(imgName + ".src");
}

function createStartLayer1(name,z,left,top,width,height){
    document.write(browser.ns4?'<layer id="'+name+'" z-index="'+z+'" left="'+left+'" top='+top+'" width="'+width+'" height="'+height+'"'+' visibility="visible">\n':'<div id="'+name+'" style="position:absolute;z-index:'+z+';left:'+left+'px;top:'+top+'px;width:'+width+'px;height:'+height+'px;visibility:visible;">\n');
} 

function createEndLayer1(){
    document.write(browser.ns4?'</layer>\n':'</div>\n');
}