/////////////////////////////////////////////////////
//                                                 //
//  SECTION 5: BROWSER SNIFFER & DOMS                                //
//  ---------------------------------------------  //
//  Document Object switch routine use to          //
//  maintain cross-browser compatibility.          //
//                                                 //
/////////////////////////////////////////////////////


// BROWSER SNIFFER (Sniff out the good and bad browsers)

function Is() {
    var agent = navigator.userAgent.toLowerCase();
    this.major = parseInt(navigator.appVersion);
    this.minor = parseFloat(navigator.appVersion);
    this.ns  = ((agent.indexOf('mozilla')!=-1) && ((agent.indexOf('spoofer')==-1) && (agent.indexOf('compatible') == -1)));
    this.ns2 = (this.ns && (this.major == 2));
    this.ns3 = (this.ns && (this.major == 3));
    this.ns4b = (this.ns && (this.minor < 4.04));
    this.ns4 = (this.ns && (this.major >= 4));
    this.ie   = (agent.indexOf("msie") != -1);
    this.ie3  = (this.ie && (this.major == 2));
    this.ie4  = (this.ie && (this.major >= 4));
    this.op3 = (agent.indexOf("opera") != -1);
    this.win   = (agent.indexOf("win")!=-1);
    this.mac   = (agent.indexOf("mac")!=-1);
    this.unix  = (agent.indexOf("x11")!=-1);
}

var is = new Is();


// DOCUMENT OBJECT SWITCH (Used for building cross_browser functions)

if(is.ns4) {
    doc = "document";
    sty = "";
    htm = ".document"
} else if(is.ie4) {
    doc = "document.all";
    sty = ".style";
    htm = ""
}


function poslayer(){
	layer3Obj = eval(doc + '["Layer3"]' + sty);
	layer1Obj = eval(doc + '["Layer1"]' + sty);
	layer7Obj = eval(doc + '["Layer7"]' + sty);
	layer6Obj = eval(doc + '["Layer6"]' + sty);
	if(is.ns4) {
		layer3Obj.left = -32;
		layer1Obj.left = 25;
		layer7Obj.top = 407;
		//layer6Obj.top = 90;
		//layer6Obj.height = 315;
	} else if(is.ie4) {
		layer3Obj.left = 4;
	}
}
////////////////////////////////////////////////////////
var loop = true;
var direction = "up";
var speed = 10;
var timer1 = null;
    
function scroll(dir,spd) {
    direction = dir;
    speed = spd;
	var page = eval(doc + '["Layer5"]' + sty);
	var y_pos = parseInt(page.top); 
     if(loop == true) {
        if(direction == "dn" && y_pos ) {
            page.top = (y_pos-(speed));
            clearTimeout(timer1);
            timer1 = setTimeout("scroll(direction,speed)", 1);

        } else if(direction == "up" && y_pos < 97) {
            page.top = (y_pos+(speed));
            clearTimeout(timer1);
            timer1 = setTimeout("scroll(direction,speed)", 1);

        } else if(direction == "top") {
            page.top = 97;
        }
    }
}