var contentPresent = 0;

function checkOS() {
if(navigator.userAgent.indexOf('Mac') != -1) var OpS = "Macintosh";
else var OpSys = "other";
return OpS;
}
var OpS = checkOS();
if (navigator.userAgent){
   var agt=navigator.userAgent.toLowerCase();
}else {
}
var appVer = navigator.appVersion.toLowerCase();
var is_minor = parseFloat(appVer);
var is_major = parseInt(is_minor);
var iePos  = appVer.indexOf('msie');

 if (iePos !=-1) {
       is_minor = parseFloat(appVer.substring(iePos+5,appVer.indexOf(';',iePos)))
       is_major = parseInt(is_minor);
    }
var nav6Pos = agt.indexOf('netscape6');
    if (nav6Pos !=-1) {
       is_minor = parseFloat(agt.substring(nav6Pos+10))
       is_major = parseInt(is_minor)
    }

var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1) && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1) && (agt.indexOf('webtv')==-1));
var is_nav4 = (is_nav && (is_major == 4));
var is_nav45up = (is_nav4 && is_minor >= 4.5);
var is_ie   = (iePos!=-1);
var is_ie4   = (is_ie && is_major == 4);
var is_ie4up = (is_ie && is_minor >= 4.5);
var is_ie5up = (is_ie && is_major >= 5);
var is_ns6 = ( is_nav && (document.getElementById));


function highlight(what,color){
what.style.background=color
}

function highlight_on(e){

if (is_ie4 || is_ie4up || is_ie5up){
	if (document.all)
		cell=event.srcElement;
	else if (document.getElementById)
		cell=e.target;
	if ((cell.className=="box") || (cell.className=="oddrow") || (cell.className=="evenrow")){
		highlight(cell,"#DCF1EC");
	} else {
		while(cell.tagName!="TABLE"){
			cell=document.getElementById? cell.parentNode : cell.parentElement
			if ((cell.className=="box") || (cell.className=="oddrow") || (cell.className=="evenrow"))
			highlight(cell,"#DCF1EC");
		}
	}
	}
}

function highlight_off(e){
if (is_ie4 || is_ie4up || is_ie5up){
	if (document.all)
		cell=event.srcElement
	else if (document.getElementById)
		cell=e.target
	if ((cell.className=="box") || (cell.className=="oddrow") || (cell.className=="evenrow"))
		highlight(cell,"")
	else{
		while(cell.tagName!="TABLE"){
			cell=document.getElementById? cell.parentNode : cell.parentElement
			if ((cell.className=="box") || (cell.className=="oddrow") || (cell.className=="evenrow"))
			highlight(cell,"");

		}
	}
	}
}