function openWindow(u,n,w,h,l,t,c,f,x) { //v2.0 4LevelWebs
  var ww=((screen.width-w)/2);if(c==1){l=ww;t=(screen.height-h)/2;}if(c==2){l=ww}
	f+=',top='+t+',left='+l;LvlWin = window.open(u,n,f);LvlWin.focus();
	document.MM_returnValue=false;
}

function validateBlankField(obj) {
	if(trim(obj.value)=='') {
		alert("All * fields are mandatory");
		obj.value='';
		obj.focus();
		return false;
	}
	return true;
}

function trim(s) {
  while (s.substring(0,1) == ' ') {
    s = s.substring(1,s.length);
  }
  while (s.substring(s.length-1,s.length) == ' ') {
    s = s.substring(0,s.length-1);
  }
  return s;
}

//validate combo box if first field is selected.
function validateCombo(cbo) {
	if(cbo.options.selectedIndex==0) { 
		alert("All * marked fields are mendatory");
		cbo.focus();
		return false;
	}
	return true;
}

function validateRadio(rad) {
	var chk=false;
		
	if(rad.length!=null) {
		for(var i=0;i<rad.length;i++) {
			if(rad[i].checked) {
				chk=true;
				break;
			}
		}
	} else {
		if(rad.checked)
			chk = true;
	}
	
	return chk;
}

function getRadioValue(rad)
{
	for (var i=0;i<rad.length;i++) {
	   if (rad[i].checked) {
		  var rad_val = rad[i].value;
	   }
    }
 	return rad_val;
}

function showDiv(div_id,input,compare) {
	var el = document.getElementById(div_id);
	if(input==compare) {
		el.style.visibility="visible";		
		el.style.position="relative";
	}
	else {
		el.style.visibility="hidden";		
		el.style.position="absolute";
	}
}
function hideDiv(div_id) {
	var el = document.getElementById(div_id);
	el.style.visibility="hidden";
	el.style.position="absolute";
}