function check(frm)
{
	if(frm.name.value=="")
	{
		alert("Please Enter name");
		return false;
	}
	
	if(frm.email.value=="")
	{
		alert("Please Enter Email Address");
		return false;
	}else{
		ValidateForm();
	}
	
	
	if(frm.norooms.value=="")
	{
		alert("Please Select Number of Rooms");
		return false;
	}
		
	if(frm.noextra.value>frm.norooms.value)
	{
		alert("Extra Bad Cannot be Greater then No. Of Rooms");
		return false;
	}
	
	
 }
 
 function ValidateForm()
 {
	var emailID=document.form1.email;
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email ID")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
	return true
 }

function dis(frm)
{
	
		var x=document.form1.extrabad.value;
		if(x=='Yes')
		document.form1.noextra.disabled=false;
		
		if(x=='No')
		{	document.form1.noextra.value='';
			document.form1.noextra.disabled=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					
	}