function Validate(){

if(webhost.name.value.length==0) { alert('Enter Name'); webhost.name.focus(); return false; }
if(webhost.address1.value.length==0) { alert('Enter Address'); webhost.address1.focus(); return false; }
if(webhost.address2.value.length==0) { alert('Enter P.O. Box'); webhost.address2.focus(); return false; }
if(webhost.phone.value.length==0) { alert('Enter Phone number'); webhost.phone.focus(); return false; }
if(webhost.email.value.length==0) { alert('You must enter email address'); webhost.email.focus(); return false; }
if(echeck(webhost.email.value)==false){ webhost.email.value=""; webhost.email.focus(); 	return false;	}
if(webhost.comments.value.length==0) { alert('You must enter your Enquiry'); webhost.comments.focus(); return false; }
return true;


}



function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail ID")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail ID")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

 		 return true					
	}