function checkDomain(nname)

{

var arr = new Array(

'.com','.net','.org','.biz','.coop','.info','.museum','.name','.travel','.cat','.arpa','.aero','.mobi','.web',

'.pro','.edu','.gov','.int','.mil','.ac','.ad','.ae','.af','.ag',

'.ai','.al','.am','.an','.ao','.aq','.ar','.as','.at','.au','.aw',

'.az','.ba','.bb','.bd','.be','.bf','.bg','.bh','.bi','.bj','.bm',

'.bn','.bo','.br','.bs','.bt','.bv','.bw','.by','.bz','.ca','.cc',

'.cd','.cf','.cg','.ch','.ci','.ck','.cl','.cm','.cn','.co','.cr',

'.cu','.cv','.cx','.cy','.cz','.de','.dj','.dk','.dm','.do','.dz',

'.ec','.ee','.eg','.eh','.er','.es','.et','.eu','.fi','.fj','.fk','.fm',

'.fo','.fr','.ga','.gd','.ge','.gf','.gg','.gh','.gi','.gl','.gm',

'.gn','.gp','.gq','.gr','.gs','.gt','.gu','.gv','.gy','.hk','.hm',

'.hn','.hr','.ht','.hu','.id','.ie','.il','.im','.in','.io','.iq',

'.ir','.is','.it','.je','.jm','.jo','.jp','.ke','.kg','.kh','.ki',

'.km','.kn','.kp','.kr','.kw','.ky','.kz','.la','.lb','.lc','.li',

'.lk','.lr','.ls','.lt','.lu','.lv','.ly','.ma','.mc','.md','.mg',

'.mh','.mk','.ml','.mm','.mn','.mo','.mp','.mq','.mr','.ms','.mt',

'.mu','.mv','.mw','.mx','.my','.mz','.na','.nc','.ne','.nf','.ng',

'.ni','.nl','.no','.np','.nr','.nu','.nz','.om','.pa','.pe','.pf',

'.pg','.ph','.pk','.pl','.pm','.pn','.pr','.ps','.pt','.pw','.py',

'.qa','.re','.ro','.rw','.ru','.sa','.sb','.sc','.sd','.se','.sg',

'.sh','.si','.sj','.sk','.sl','.sm','.sn','.so','.sr','.st','.sv',

'.sy','.sz','.tc','.td','.tf','.tg','.th','.tj','.tk','.tm','.tn',

'.to','.tp','.tr','.tt','.tv','.tw','.tz','.ua','.ug','.uk','.um',

'.us','.uy','.uz','.va','.vc','.ve','.vg','.vi','.vn','.vu','.ws',

'.wf','.ye','.yt','.yu','.za','.zm','.zw');



var mai = nname;
var val = true;

var noOfDots = mai.split(".").length-1;
var dot = mai.lastIndexOf(".");
var dname = mai.substring(0,dot);
var ext = mai.substring(dot,mai.length);
//alert(ext);

if(dot>2 && dot<57) {

	for(var i=0; i<arr.length; i++)
	{
	  if(ext == arr[i]) {
	 	val = true;
		break;
	  }	else {
	 	val = false;
	  }
	}

	if(val == false) {
	  	 alert("Your domain extension "+ext+" is not correct");
		 return false;
	} else {

		for(var j=0; j<dname.length; j++) {

		  var dh = dname.charAt(j);
		  var hh = dh.charCodeAt(0);

		  if((hh > 47 && hh<59) || (hh > 64 && hh<91) || (hh > 96 && hh<123) || hh==45 || hh==46) {

			 if((j==0 || j==dname.length-1) && hh == 45) {
		 	  	 alert("Domain name should not begin or end with '-'");
			      return false;
		 	 }
		  } else {
		  	 alert("Your domain name should not have special characters such as http://, and should be just in the form of 'domain.com'");
			 return false;
		  }

		}

	}

} else if (dot==-1) {

 alert("Please enter an extension");

 return false;

} else {

 alert("Your Domain name is too short/long");

 return false;

}	



return true;

}