var menuison = false;
var startdate = new Date();
var curDate = new Date();
var delayto = 500;
var buildRowHeight = 20;

//browser detection section begin

var BrowserDetect = {
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
		this.OS = this.searchString(this.dataOS) || "an unknown OS";
	},
	searchString: function (data) {
		for (var i=0;i<data.length;i++)	{
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
	},
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
	},
	dataBrowser: [
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari"
		},
		{
			prop: window.opera,
			identity: "Opera"
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab"
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{	// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv"
		},
		{ 	// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla"
		}
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},
		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		},
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};

BrowserDetect.init();
//browser detection section end




function buildMenu(idSelect)
{    
	menuison = true;    	
    // Build the menu
	var x=0;
	var elemSelect = document.getElementById(idSelect);
	if (elemSelect == null) {
	    alert("No menu found");
		return;
	}	
	var innerTable = "";
	for (x=0;x<elemSelect.length;x++) {
		var opt = elemSelect.options[x];
		if (opt.selected) {
			innerTable += "<TR><TD id=row" + idSelect + x + " class=menu_item_bg_rev onmouseover=\"javascript:switchColor(this, 'font" + idSelect + x + "', true);\" onmouseout=\"javascript:switchColor(this, 'font" + idSelect + x + "', false);\" onclick=\"javascript:navigateTo('" + idSelect + "', '" + x + "');\"><font class=menu_font_rev id=font" + idSelect + x + ">" + opt.text + "</font></TD></TR>";					
		} else {
			innerTable += "<TR><TD id=row" + idSelect + x + " class=menu_item_bg onmouseover=\"javascript:switchColor(this, 'font" + idSelect + x + "', true);\" onmouseout=\"javascript:switchColor(this, 'font" + idSelect + x + "', false);\" onclick=\"javascript:navigateTo('" + idSelect + "', '" + x + "');\"><font class=menu_font id=font" + idSelect + x + ">" + opt.text + "</font></TD></TR>";					
		}
	}
	
	var mItem = document.getElementById(idSelect + "_tag");    	
	
	//var widthSelect = mItem.style.width;	
	var widthSelect = parseFloat(mItem.style.width) + 2;
	
	var ddDiv = document.getElementById("DropDownMenu");
	var ddHeight = x * buildRowHeight;	
	innerTable = "<TABLE cellSpacing=1 cellPadding=1 width=" + widthSelect + " height=" + ddHeight + " border=0 style='background: #FFFFFF; text-align:center; vertical-align:bottom;'>" + innerTable + "</TABLE>";
	ddHeight = ddHeight + 1;
	ddDiv.style.height = ddHeight + 'px';
	ddDiv.style.width = widthSelect + 'px';
	
	if (mItem != null) {
	    var xVal = getSelectX(mItem);
		
		var yVal = getSelectY(mItem) + 21;		
		if (BrowserDetect.browser == 'Safari') {
            yVal = yVal - 14;  
            xVal = xVal - 8;     
            ddDiv.style.textAlign='center';     
            
        }        
        ddDiv.style.left = xVal + "px";
		ddDiv.style.top = yVal + "px";
        // "(" + getSelectX(mItem) + ":" + getSelectY(mItem) + ")" + 
    	ddDiv.innerHTML = innerTable;	
	} else {
		alert("MENU not found: " + idSelect + "_tag");
	}
	ddDiv.style.visibility = "visible";	
	hidemenus(2000);	
}

function navigateTo(idSelect, x)
{
	var elemSelect = document.getElementById(idSelect);
	if (elemSelect == null) {
	    alert("No menu found");
		return;
	} else {
        var opt = elemSelect.options[x];
        if (opt != null) {
            location = opt.value;
        } else {
            alert("option not found");
        }	
	}
}

function getSelectX(obj)
{
 return( obj.offsetParent==null ? obj.offsetLeft : obj.offsetLeft+getSelectX(obj.offsetParent) );
}

function getSelectY(obj)
{
 return( obj.offsetParent==null ? obj.offsetTop : obj.offsetTop+getSelectY(obj.offsetParent) );
}


function switchColor(eitem, fontName, bSwitch) {

	menuison = true;
	var elem = eitem;		
	var fid = document.getElementById(fontName);

	if (bSwitch == true) {
		elem.className = "menu_item_bg_rev";
		fid.className = "menu_font_rev";
		grabhover(elem);
	} else {
		elem.className = "menu_item_bg";	
		fid.className = "menu_font";
		grabout(elem);
	}
}

function grabhover(divelem) {
	divelem.style.cursor = "hand";
	divelem.style.background = "#005ea0";
}

function grabout(divelem) {
	divelem.style.cursor = "default";
	divelem.style.background = "#68875f";
}

function hidemenus(delay) {
	delayto = delay;
	menuison=false;
	startdate = new Date();
	curdate=null;
	menuoff();
}

function menuoff() {

	curdate = new Date(); 
	
	if (curdate-startdate > delayto) {
		if (!menuison) {
			// Hide menu
			menudiv = document.getElementById("DropDownMenu");		
			menudiv.style.visibility = "hidden";			
		}
	} else {
		if (!menuison) {
			setTimeout("menuoff()", 1000);
		}
	}
}