function product()
{
	var html_str = '<img src="images/solution_head.jpg" width="536" height="50" alt="">';
	$("#div_head").html(html_str);
	$("#maintxt").hide();
	$("#div_service").hide();
	$("#div_contact").hide();
	$("#div_solution").show();
}

function home()
{
	var html_str = '<img src="images/text_nav_2.gif" width="536" height="50" alt="">';
	$("#div_head").html(html_str);
	$("#div_service").hide();
	$("#div_solution").hide();
	$("#div_contact").hide();
	$("#maintxt").show();
}

function service()
{
	var html_str = '<img src="images/service_head.gif" width="536" height="50" alt="">';
	$("#div_head").html(html_str);
	$("#maintxt").hide();
	$("#div_solution").hide();
	$("#div_contact").hide();
	$("#div_service").show();
}

function contact()
{
	var html_str = '<img src="images/contact_head.gif" width="536" height="50" alt="">';
	$("#div_head").html(html_str);
	$("#maintxt").hide();
	$("#div_solution").hide();
	$("#div_service").hide();
	$("#div_contact").show();
}
function partner()
{
	var html_str = '<img src="images/partner_head.gif" width="536" height="50" alt="">';
	$.ajax({	
		url : "home.html",
		success : function (data) {
			$("#div_head").html(html_str);
			$("#maintxt").html(data);
		}
	});
}

function email_reset()
{
	var blank='';
	$("#email").val(blank);
	$("#name").val(blank);
	$("#phone").val(blank);
	$("#comments").val(blank);
}

function email_submit()

 { 
  if (document.getElementById){
    var i,p,q,nm,test,num,min,max,errors='',args=email_submit.arguments;
    for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=document.getElementById(args[i]);
      if (val) { nm=val.name; if ((val=val.value)!="") {
        if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
          if (p<1 || p==(val.length-1)) errors+='- '+nm+' must contain an e-mail address.\n';
        } else if (test!='R') { num = parseFloat(val);
          if (isNaN(val)) errors+='- '+nm+' must contain a number.\n';
          if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
            min=test.substring(8,p); max=test.substring(p+1);
            if (num<min || max<num) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n';
      } } } else if (test.charAt(0) == 'R') errors += '- '+nm+' is required.\n'; }
    } 
	if (errors) alert('The following error(s) occurred:\n'+errors);
    	else
	{
	document.MM_returnValue = (errors == '');
	var name = $("#name").val();
	var email = $("#email").val();
	var phone = $("#phone").val();
	var comments = $("#comments").val();
	$("#btn").hide();
	var url_str = 'contact_usform.php?name=' + name + '&email=' + email + '&phone=' + phone + '&comments=' + comments;
	$.ajax({	
		url : url_str,
		success : function (data) {
			$("#div_msg").html(data);
		}
	});
	}
	}

}