function changeColor()
{
  document.getElementById("color1").style.background="#FF0000";
  document.getElementById("color1").style.color="#FFffff";
  
}

function defaultColor()
{
  document.getElementById("color1").style.background="";
  document.getElementById("color1").style.color="";

}

function removeColor()
{
	document.getElementById("color1").style.background="#370dec";
  document.getElementById("color1").style.color="#ffffff";
 
}

function remove1Color()
{
  document.getElementById("color1").style.background="#666666";
  document.getElementById("color1").style.color="#ffffff";
 
}


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 validate (formobj)
    {
	var name;
    name=formobj.name.value;
    if (name=="")
    {
    alert("please enter your Full Name");
    return false;
    }
	var email;
    email=formobj.email.value;
    if (email=="")
    {
    alert("please enter your Email id");
    return false;
    } 
 
     var emailID=document.formdetails.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;
    } 	
	var query;
    query=formobj.query.value;
    if (query=="")
    {
    alert("please enter your Query");
    return false;
    }
	return true;
	}