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 checkEmail(xField)
	{
		var check, atPos, dotPos, strLen, cut1, cut2, cut3;
		strLen	=	xField.length;
		atPos	=	xField.indexOf("@");
		cut4	=	xField.slice(atPos);
		strLendot	=	cut4.length;
		dotPos	=	cut4.indexOf(".");	
		cut1	=	xField.slice(0,atPos);
		cut2	=	cut4.slice(dotPos);
		cut3	=	cut4.slice(dotPos + 1,strLendot);
		ix = cut3.indexOf(",");

		check = true;
		
		if ( atPos < 2 )
		{
			check = false;
		}
		else if ( (!isNaN(cut1)) || (!isNaN(cut2)) || (!isNaN(cut3)))
		{
			check = false;
		}
		else if ( (!specialCheck(cut1)) || (!specialCheck(cut2)) || (!specialCheck(cut3))  || ix >= 0)
		{
			check = false;
		}
		else if ( atPos < 1 )
		{
			check = false;
		}
	return check;
	}
	
// FUNCTION FOR FINDING BLANK SPACE 
	function spaceCheck(xField)
	{
		var check, i;
		check = true;
		i = xField.indexOf(" ");
		if ( i != -1 )
		{
		check = false;
		}
	return check;	
	}
// FUNCTION FOR FINDING LENGTH	
	function lengthTeller(xField)
	{
	var teller;
		teller = xField.length;
	return teller;		
	}
// FUNCTION FOR CHECKING SPECIAL CHARACTERS
	function specialCheck(xField)
	{
	var strSpecial, check;
		check = true;
		i = xField.length;
		
		for( j =0;j<=i;j++ )
		{
			pos = xField.charAt(j);
			
			if ( pos == "~" || pos == "'" || pos == "!" || pos == "$" )
			{
			check = false;
			}
			else if ( pos == "@" || pos == "#" || pos == "[" || pos =="]" || pos == "%" || pos == "^")
			{
			check = false;
			}
			else if ( pos == "*" || pos == "{" || pos == "}" || pos == ";")
			{
			check = false;
			}
			else if ( pos == ":" ||  pos == "|" || pos == "<")
			{
			check = false;
			}
		}
	return check;		
	}
	
	function absSpcheck(xVal)
	{
		var strSpecial, check;
		check = true;
		i = xVal.length-1;
		
		for( j =0;j<=i;j++ )
		{
		pos = xVal.charAt(j);
		if ( pos < '0' || (pos > '9' && pos <  'A') || (pos > 'Z' && pos < 'a' && pos != '_' ) ||  pos > 'z' )
			{
			check = false;
			}
		}
		
	return check;					
	}

function checkForm()
	{
		if(document.frmRef.txtName.value=="")
		{
			alert("Please enter the referrer's name");
			document.frmRef.txtName.focus();
			return false;
		}
		else if(document.frmRef.txtPhone.value=="")
		{
			alert("Please enter the referrer's phone number");
			document.frmRef.txtPhone.focus();
			return false;
		}
		else if(document.frmRef.txtEmail.value=="")
		{
			alert("Please enter the referrer's email address");
			document.frmRef.txtEmail.focus();
			return false;
		}
		else if(checkEmail(document.frmRef.txtEmail.value)==false)
		{
			alert("Please enter a valid email address for the referrer");
			document.frmRef.txtEmail.focus();
			return false;
		}
		else if(document.frmRef.txtRefName.value=="")
		{
			alert("Please enter the referred's name");
			document.frmRef.txtRefName.focus();
			return false;
		}
		else if(document.frmRef.txtRefPhone.value=="")
		{
			alert("Please enter the referred person's phone number");
			document.frmRef.txtRefPhone.focus();
			return false;
		}
		else if(document.frmRef.txtRefEmail.value=="")
		{
			alert("Please enter the referred person's email address");
			document.frmRef.txtRefEmail.focus();
			return false;
		}
		else if(checkEmail(document.frmRef.txtRefEmail.value)==false)
		{
			alert("Please enter a valid email address for the referred person");
			document.frmRef.txtRefEmail.focus();
			return false;
		}
		else
		{
			return true;
		}
	
	}