function checkuser()
	{
	
	if (document.form1.txt_name.value==""){
	  	alert("Name Field Is Blank. Please Enter Your Name."); 
		document.form1.txt_name.focus();
		return false;
 	}		
	if (document.form1.txt_email.value==""){
	  	alert("Email Address Field Is Blank. Please Enter Your Email Address."); 
		document.form1.txt_email.focus();
		return false;
 	}
	if(document.form1.txt_email.value.indexOf(".") == -1 || document.form1.txt_email.value.indexOf("@") == -1)
	{
	alert("Email Address Is Invalid. Please Enter Valid Email Address."); 
	document.form1.txt_email.focus();
	return false;
	}
	if (document.form1.txt_comments.value==""){
	  	alert("Comments Field Is Blank. Please Enter Comments."); 
		document.form1.txt_comments.focus();
		return false;
 	}
return true;
	}