function alt_null()
{
	document.getElementById("alt_company").innerHTML="";
	document.getElementById("alt_person").innerHTML="";
	document.getElementById("alt_designation").innerHTML="";
	document.getElementById("alt_email").innerHTML="";
	document.getElementById("alt_address").innerHTML="";
	document.getElementById("alt_contactNo").innerHTML="";
}
function validate()
{
    if (document.frm.cname.value=="")
    {
    //alert("Please enter company name")
        alt_null();
        document.getElementById("alt_company").innerHTML="Please enter company name.";
        document.frm.cname.focus()
        return false;
    }
    if (document.frm.cperson.value=="")
    {   
        alt_null();
        //alert("Please enter contact person name")
        document.getElementById("alt_person").innerHTML="Please enter contact person name.";
        document.frm.cperson.focus()
        return false;
    }
    if (document.frm.desig.value=="")
    {
        alt_null();
        //alert("Please enter designation")
        document.getElementById("alt_designation").innerHTML="Please enter designation.";
        document.frm.desig.focus()
        return false;
    }

        ok=true	
	if(document.frm.email.value=="")
	{
		alt_null();
		//alert("Please enter Email address.")
		document.getElementById("alt_email").innerHTML="Please enter Email address.";
		document.frm.email.focus()
		ok=false
		return ok
	}
	else
	{
	
	    var str =/[-a-zA-Z0-9_\.]+@[-a-zA-Z0-9]+\.[-a-zA-Z0-9\.]+/;
	    var eflag = document.frm.email.value.match(str);
	    if(eflag!=document.frm.email.value)
	    {
    		alt_null();
    		//alert("Please enter a valid Email Address")
    		document.getElementById("alt_email").innerHTML="Please enter a valid Email Address.";
    		document.frm.email.focus();
    		document.frm.email.select();
    		return false;
	    }
	}

    if (document.frm.address.value=="")
    {
        alt_null();
        //alert("Please enter address")
        document.getElementById("alt_address").innerHTML="Please enter address.";
        document.frm.address.focus()
        return false;
    }
	str9 = document.frm.cno.value
	if (str9=="")
	{
    	alt_null();
    	//alert("Please enter contact number")
    	document.getElementById("alt_contactNo").innerHTML="Please enter contact number.";
    	document.frm.cno.focus()
    	return false
	}
	else{
    
        for (var i = 0; i < str9.length; i++) {
		var ch = str9.substring(i, i + 1);
		if (ch < "0" || "9" < ch) 
		{
		if(ch==" "){}
		else {
    			alt_null();
    			//alert("\nThe Contact field only accepts integers.\n\nPlease re-enter your contact no..");
    			document.getElementById("alt_contactNo").innerHTML="The Contact field only accepts integers. <br>Please re-enter your contact no.";
    			document.frm.cno.focus();		
    			document.frm.cno.select();		
    			return false;
			}
		    }
	    }
	}


return true;
}