// JavaScript Document
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}


function checkpassword(frmpassword){  // validate the password confirmation...
	password1 = frmpassword.txtpassword.value;
	password2 = frmpassword.txtpasswordc.value;

	//Checks length of password
	if (password1!="")  {
		if (passlength(password1)==false){
			frmpassword.txtpassword.focus();
			return false;
		}
	}
	if (password2!="")  {
		if (passlength(password2)==false){
			frmpassword.txtpasswordc.focus();
			return false;
		}
	}
	// check for invalid characters
	if (password1!="")  {
		if (lettersnum(password1)==false){
			frmpassword.txtpassword.value ="";			
			frmpassword.txtpassword.focus();
			return false;
		}
	}
	if (password2!="")  {
		if (lettersnum(password2)==false){
			frmpassword.txtpasswordc.value ="";
			frmpassword.txtpasswordc.focus();
			return false;
		}
	}



	//Check that password and password confirmation are the same.
	if (password1!="" && password2!=""){ //Password
		if(trim(password1)==trim(password2)){
			return true;
		} else {
			alert ('Please make sure you type your password correctly');
			frmpassword.txtpassword.value ="";
			frmpassword.txtpassword.focus();
			frmpassword.txtpasswordc.value="";

			return false;
		}
	} 
	return true;

}

function lettersnum(strln) {
	var ln = (strln.length - 1);
	
	for (i=0;i<=ln;i++){
		if ((strln.charCodeAt(i) >= 48 && strln.charCodeAt(i) <= 57) ||  (strln.charCodeAt(i) >= 65 && strln.charCodeAt(i) <= 90) || (strln.charCodeAt(i) >= 97 && strln.charCodeAt(i) <= 122)  ){
		} else {
			alert ('Password must be letters and numbers only. It is case sensitive');
			return false;
		}
	}
	return true;	
	
}

function passlength( passl){
	
	if (trim(passl)!= ""){
		if (passl.length < 6) {
			alert ('Password must be 6 to 12 characters long');
			return false;
		} else if (passl.length > 12){
			alert ('Password must be 6 to 12 characters long');
			return false;
		}
		
	}
return true;
	
}

function trim(s) // trim fuction. 
{
	return rtrim(ltrim(s));
}

function ltrim(s)
{
	var l=0;
	while(l < s.length && s[l] == ' ')
	{	l++; }
	return s.substring(l, s.length);
}

function rtrim(s)
{
	var r=s.length -1;
	while(r > 0 && s[r] == ' ')
	{	r-=1;	}
	return s.substring(0, r+1);
}

//Detects if a text box 
function textselected(textarea, addtype, textlink){
	if (addtype == 2){
		if (trim(textlink.value) == ""){
			alert ('Please enter a web address!')
			textlink.focus();
			return false;
		}
	}
	
	if (navigator.appName == "Microsoft Internet Explorer"){
		// code for IE
		if (document.selection) {
			textarea.focus();
			var sel = document.selection.createRange();
			if ((trim(sel.text)=="") && (addtype != 3) ) {
			alert ('Please select some text on the Answer text area');
			return false;
			}
			// Finally replace the value of the selected text with this new replacement one
			if (addtype==1){
				sel.text = '<b>' + sel.text + '</b>';
			} else {
				if (addtype==2){
				sel.text = '<a href="' + trim(textlink.value) +'">' + sel.text + '</a>';
				} else {
					sel.text = sel.text + '<br>';
				}
				
			}
			return true;
		} 
	} else {
		//Code for real browsers
		var len = textarea.value.length;
		var start = textarea.selectionStart;
		var end = textarea.selectionEnd;
		if ((start==end) && (addtype != 3)){
			alert ('Please select some text on the Answer text area');
			return false;
		}
		
		var sel = textarea.value.substring(start, end);
		// Replace the text value
		if (addtype==1){
			var replace = '<strong>' + sel + '</strong>';
		} else {
			if (addtype==2){			
				var replace = '<a href="' + trim(textlink.value) +'">' + sel + '</a>';
			} else {
				var replace =  sel + '<br>';
			}
				
		}
		// Here we are replacing the selected text with this one
		textarea.value = textarea.value.substring(0,start) + replace + textarea.value.substring(end,len);
		return true;
	}
	
}

//Capitalize 
function capitalizes(capstr){
	
	var strcap = trim(capstr.toLowerCase());
	
	strcap = strcap.replace(/\s+/g," ");
	straux = strcap.split(' ');

	strf='';
	
	for (i=0;i<strcap.split(' ').length;i++) {
		strtemp = straux[i].substr(0,1);
		strf = strf + ' ' +  strtemp.toUpperCase() + straux[i].slice(1);
	}
	
	
/*	straux = strcap.substr(0,1);
	strcap = straux.toUpperCase() + strcap.slice(1);*/
	strf = trim(strf);
	return strf;
}


//clean a form
function cleanform(frmtoclean){
	
var elem = document.getElementById(frmtoclean).elements;

   for(i=0; i<elem.length; i++){

      if(elem[i].type == "text" || elem[i].type == "textarea" || elem[i].type == "password"){
	      elem[i].value ="";
      }
      else if(elem[i].type == "select-one"){
      elem[i].value="0";
      }
	  else if(elem[i].type == "checkbox"){
      elem[i].checked=false;
      }
	  
	  
   }

} 

//Open window, parameters window name, width, height 
function openwin(winname, w, h){
	printwin = window.open(winname, winname, "width="+ w + ", height="+h);
	
}

//Limit characters in a text area.
function limitText(limitField, limitCount, limitNum) {
	if (limitField.value.length > limitNum) {
		limitField.value = limitField.value.substring(0, limitNum);
	} else {
		limitCount.value = limitNum - limitField.value.length;
	}
}



function numbersonly(e, decimal, grade) {
var key;
var keychar;

if (window.event) {
   key = window.event.keyCode;
}
else if (e) {
   key = e.which;
}
else {
   return true;
}
keychar = String.fromCharCode(key);

if ((key==null) || (key==0) || (key==8) ||  (key==9) || (key==13) || (key==27) ) {
   return true;
}
else if ((("0123456789").indexOf(keychar) > -1)) {
   return true;
}
else if (decimal && (keychar == ".")) { 
  return true;
}
else if (grade && (("pPkK,-").indexOf(keychar) > -1)) { 
  return true;
}
else
   return false;
}







//-->