function emptyvalidation(entered, alertbox)
{

with (entered)
{
if (value==null || value=="")
{if (alertbox!="") {alert(alertbox);} return false;}
else {return true;}
}
}

function digitvalidation(entered, min, max, alertbox, datatype)
{

with (entered)
{
checkvalue=parseFloat(value);
if (datatype)
{smalldatatype=datatype.toLowerCase();
if (smalldatatype.charAt(0)=="i") 
{checkvalue=parseInt(value); if (value.indexOf(".")!=-1) {checkvalue=checkvalue+1}};
}
if ((parseFloat(min)==min && value.length<min) || (parseFloat(max)==max && value.length>max) || value!=checkvalue)
{if (alertbox!="") {alert(alertbox);} return false;}
else {return true;}
}
} 


function valuevalidation(entered, min, max, alertbox, datatype)
{

with (entered)
{
checkvalue=parseFloat(value);
if (datatype)
{smalldatatype=datatype.toLowerCase();
if (smalldatatype.charAt(0)=="i") {checkvalue=parseInt(value)};
}
if ((parseFloat(min)==min && checkvalue<min) || (parseFloat(max)==max && checkvalue>max) || value!=checkvalue)
{if (alertbox!="") {alert(alertbox);} return false;}
else {return true;}
}
} 


function emailvalidation(entered, alertbox)
{
with (entered)
{
apos=value.indexOf("@"); 
dotpos=value.lastIndexOf(".");
lastpos=value.length-1;
if (apos<1 || dotpos-apos<2 || lastpos-dotpos>3 || lastpos-dotpos<2) 
{if (alertbox) {alert(alertbox);} return false;}
else {return true;}
}
}


fillRequiredFields='fill all (*) fields';
wrongEmailAddress='wrong email';
		
function validateContactForm(thisform)
{
	with (thisform)
	{
	if (emptyvalidation(frmName,fillRequiredFields)==false) {frmName.focus(); return false;};
	if (emptyvalidation(frmEmail,wrongEmailAddress)==false) {frmEmail.focus(); return false;};
	if (emailvalidation(frmEmail,wrongEmailAddress)==false) {frmEmail.focus(); return false;};
	if (emptyvalidation(frmPhone,fillRequiredFields)==false) {frmPhone.focus(); return false;};
	}
}