function check()
{
if(document.mainform.txtMail.value=="")
		{
		alert("Please fill Your Email Address......");
		document.mainform.txtMail.focus();   
		return false
		}
/////////////EMail validation////////////////////////////////////////////////

		var Flag,Flag1
		Flag=Flag1=false;
		Evalue	=	document.mainform.txtMail.value;
		Elength=Evalue.length;
		for(i=0;i< Elength;i++)
			{
			if(Evalue.charAt(i)=='@')
				{
				Flag=true;
				document.mainform.txtMail.focus();
				break;
				}
			}
		for(i=0;i< Elength;i++)
			{
			if(Evalue.charAt(i)=='.')
				{
				Flag1=true;
				document.mainform.txtMail.focus();	
				break;
				}
			}	

		if(Flag==false || Flag1==false || Evalue=="")
			{
			alert("Invalid email id...");
			document.mainform.txtMail.focus();	
			return false;
			}
	
document.mainform.submit();
return true
}