function onlynum(e)
{
	var keynum
	var keychar
	var numcheck
	if(window.event) // IE
	{
		keynum = e.keyCode
	}
	else if(e.which) // Netscape/Firefox/Opera
	{
		keynum = e.which
	}
	keychar = String.fromCharCode(keynum)
	if(keynum<48||keynum>57)
	{
		return false
	}
	else
	{
	return keychar
	}
}

function onlyalnum(e)
{
	var keynum
	var keychar
	var numcheck
	if(window.event) // IE
	{
		keynum = e.keyCode
	}
	else if(e.which) // Netscape/Firefox/Opera
	{
		keynum = e.which
	}
	keychar = String.fromCharCode(keynum)
	var valfrm = /^([a-zA-Z0-9_\.\-])+$/; 
	if (!valfrm.test(keychar))
	{
		alert("Invalid Character");
		return false
		
	}
}

function onlyalnumsp(e)
{
	var keynum
	var keychar
	var numcheck
	if(window.event) // IE
	{
		keynum = e.keyCode
	}
	else if(e.which) // Netscape/Firefox/Opera
	{
		keynum = e.which
	}
	keychar = String.fromCharCode(keynum)
	var valfrm = /^([a-zA-Z0-9_\.\-\,\#\/])+$/; 
	if (!valfrm.test(keychar))
	{
		alert("Invalid Character");
		return false
		
	}
}

function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==(lstr-1)){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==(lstr-1)){
		    alert("Invalid E-mail ID")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail ID")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

 		 return true					
	}

function formCheck(form)
{
	var emailID=form.email
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email ID")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
	return true
}