function alpha_numeric(text)
{var numaric=text;for(var j=0;j<numaric.length;j++)
{var alphaa=numaric.charAt(j);var hh=alphaa.charCodeAt(0);if((hh>47&&hh<58)||(hh>64&&hh<91)||(hh==95)||(hh>96&&hh<123))
{}
else{return false;}}
return true;}
function alpha_dash(o,w)
{var r={'special':/[\W]/g}
o.value=o.value.replace(r[w],'');}
function numeric(s)
{var i;s=s.toString();for(i=0;i<s.length;i++)
{var c=s.charAt(i);if(isNaN(c))
{return false;}}
return true;}
function email_validate(text){var reg=/^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;var email=text;if(reg.test(email)==false){return false;}else{return true;}}