function formCheck() 
{
        if (document.theform.realname.value == "") 
        {
        alert("Please enter your name");
		document.theform.realname.value="";
		document.theform.realname.focus();
        return false;
        }
		
		if (document.theform.email.value == "") 
        {
        alert("Please enter a valid email address");
        return false;
        }
		
		if (echeck(document.theform.email.value)==false)
		{
			document.theform.email.value="";
			document.theform.email.focus();
			return false;
		}
		
		if (document.theform.comments.value == "")
        {
        alert("Please enter text in the comments field of the form.");
		document.theform.comments.value="";
		document.theform.comments.focus();
        return false;
        }
       
	   if (document.theform.security_code.value == "") 
        {
        alert("Please enter the security code.");
        return false;
        }
}

/**
 * DHTML email validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */

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("Please enter a valid email address")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Please enter a valid email address")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Please enter a valid email address")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Please enter a valid email address")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Please enter a valid email address")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Please enter a valid email address")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Please enter a valid email address")
		    return false
		 }

 		 return true				
	}
	
function loadPopup(){  
//loads popup only if it is disabled  
if(popupStatus==0){  
$("#backgroundPopup").css({  
"opacity": "0.7"  
});  
$("#backgroundPopup").fadeIn("slow");  
$("#popupContact").fadeIn("slow");  
popupStatus = 1;  
}  
}  

function disablePopup(){  
//disables popup only if it is enabled  
if(popupStatus==1){  
$("#backgroundPopup").fadeOut("slow");  
$("#popupContact").fadeOut("slow");  
popupStatus = 0;  
}  
} 

function centerPopup(){  
//request data for centering  
var windowWidth = document.documentElement.clientWidth;  
var windowHeight = document.documentElement.clientHeight;  
var popupHeight = $("#popupContact").height();  
var popupWidth = $("#popupContact").width();  
//centering  
$("#popupContact").css({  
"position": "absolute",  
"top": windowHeight/2-popupHeight/2,  
"left": windowWidth/2-popupWidth/2  
});  
//only need force for IE6  
  
$("#backgroundPopup").css({  
"height": windowHeight  
});  
  
}