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;
	}
function ValidateForm(formname){
    var friendemailID=document.enquiry.enemail;
 if ((friendemailID.value==null)||(friendemailID.value=="")){
		alert("Please Enter your Email ID");
		friendemailID.focus();
		return false;
	}
	if (echeck(friendemailID.value)==false){
		friendemailID.value="";
		friendemailID.focus();
		return false;
	}
    if(document.enquiry.comments.value==""){
        alert("Please Write your Enquiry/Comments");
        document.enquiry.comments.focus();
       
    } 
	  if(document.enquiry.img1.value!=document.enquiry.img2.value){
        alert("Invalid image validation code");
        document.enquiry.img1.focus();
      return false; 
    } 
}