/**********************************************************************************************/
/*This file contains javascript functions that are being used in various scripts*/
/**********************************************************************************************/

/*This function checks for the validity of usernameId*/
function checkemail(emailadd)
{
        var result = false;
        var theStr = new String(emailadd);
        var index = theStr.indexOf("@");
        if (index > 0)
        {
        var pindex = theStr.indexOf(".",index);
        if ((pindex > index+1) && (theStr.length > pindex+2))
                result = true;
        }
                                                                                                
        return result;
}
function checkusername(usernameadd)
{
        var result = false;
        var theStr = new String(usernameadd);
        var index = theStr.indexOf("@");
        if (index > 0)
        {
        var pindex = theStr.indexOf(".",index);
        if ((pindex > index+1) && (theStr.length > pindex+2))
                result = true;
        }
                                                                                                
        return result;
}
/*Checks for the existence of invalid characters in username*/
function invalid_user(username)
{
	var invalidchar = new Array('#','\'','"','\\','/',' ','!','@','$','%','^','&','*','?');
	var invalid=0;
	for(i=0;i<username.length;i++)
	{
		for(j=0;j<invalidchar.length;j++)
		{
			if (username[i]==invalidchar[j])
			{
				invalid=1;
				break;
			}
		}
	}
	return invalid;
}

/*This function trims input string*/                                                    
function trim(inputString) {
	if (typeof inputString != "string") { return inputString; }
   	var retValue = inputString;
   	var ch = retValue.substring(0, 1);
   	while (ch == " ") {
      		retValue = retValue.substring(1, retValue.length);
      		ch = retValue.substring(0, 1);
   	}
   	ch = retValue.substring(retValue.length-1, retValue.length);
   	while (ch == " ") {
      		retValue = retValue.substring(0, retValue.length-1);
      		ch = retValue.substring(retValue.length-1, retValue.length);
   	}
   	while (retValue.indexOf("  ") != -1) {
      		retValue = retValue.substring(0, retValue.indexOf("  ")) + retValue.substring(retValue.indexOf("  ")+1, retValue.length);
   	}
   	return retValue;
}

/*This function checks for the validity of floating-point numbers*/
function isint(str)
{
	var flag=0;
	for(var i=0;i < str.length;i++)
	{
		if((str[i]>=0 && str[i]<=9)||str[i]==".")
			flag=1;
		else
			return 0;
	}
	return flag;
}

/*Checks for the validity of integers*/
function isint2 (str)
{
	var i = parseInt (str);

	if (isNaN (i))
	return false;

	i = i . toString ();
	if (i != str)
	return false;

	return true;
}

/*This function is used for checking validity of phone number and pincode in the sense that they should consist digits only*/
function isint1(str)
{
	var flag=1;
	/*if(str.length < 6)
		flag=0;*/
	for(var i=0;i < str.length;i++)
	{
		if(str[i]>=0 && str[i]<=9)
			flag=1;
                       	else
                               	return 0;
	}
	return flag;
}

/* Javascript functions for images on subheader and their mouseover effects....
   Added by Sumit on 13 Aug 2005					*/

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];}
}