/*--------------------------Trim()--------------------------*/
function trim(inputString) 
{
   if (typeof inputString != "string") { return inputString; }
   var retValue = inputString;
   var ch = retValue.substring(0, 1);
   
   while (ch == " ") { 
      retValue = retValue.substring(1, retValue.length);
      ch = retValue.substring(0, 1);
   }
   
   ch = retValue.substring(retValue.length-1, retValue.length);
   while (ch == " ") { 
      retValue = retValue.substring(0, retValue.length-1);
      ch = retValue.substring(retValue.length-1, retValue.length);
   }
   while (retValue.indexOf("  ") != -1) { 
      retValue = retValue.substring(0, retValue.indexOf("  ")) + retValue.substring(retValue.indexOf("  ")+1, retValue.length); 
   }
   return retValue;
}
/*--------------------------Trim()--------------------------*/

/*---------------E-mail check function---------------*/
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;
 	    	 			
	}
/*---------------E-mail check function---------------*/

/*--------------form validation function---------------*/
function validateForm(form)
	{ 	
	
	if(trim(form.name.value) =="")
		{
			alert("Please Enter Your Contact Name");
			form.name.focus();
			return false;
		}
		if(trim(form.zip.value) =="")

		{
			alert("Please Enter Your Zip Code");
			form.zip.focus();
			return false;	
			
		}

		{
			var valid = ".0123456789-() "
			var ok = "yes";
			var temp;
			for (var i=0; i<form.zip.value.length; i++) 
			{
				temp = "" + form.zip.value.substring(i,i+1);
				if (valid.indexOf(temp) == "-1") 
				ok = "no";
			}
			if (ok == "no")
 			{
				alert("Invalid Entry! Only Numbers Are Accepted!");
				form.zip.value="";
				form.zip.focus();
				return false;
			}
		}	
		
		
	if(trim(form.phone.value) =="")

		{
			alert("Please Enter Your Phone Number");
			form.phone.focus();
			return false;	
			
		}

		{
			var valid = ".0123456789-() "
			var ok = "yes";
			var temp;
			for (var i=0; i<form.phone.value.length; i++) 
			{
				temp = "" + form.phone.value.substring(i,i+1);
				if (valid.indexOf(temp) == "-1") 
				ok = "no";
			}
			if (ok == "no")
 			{
				alert("Invalid Entry! Only Numbers Are Accepted!");
				form.phone.value="";
				form.phone.focus();
				return false;
			}
		}
		
		/* Email Validation */
		if(form.email.value =="")
		  {
			alert("Please Enter Email Address");
			form.email.focus();
			return false;
		  }
		  
		if(form.email.value !=='')
		  {		
			if (echeck(form.email.value)==true)
			  {
						
			  }
			else
			  {
				form.email.focus();
				return false;
			  }
			  
			}
		
	}
/*--------------form validation function---------------*/