ie = document.all?1:0
ns4 = document.layers?1:0

function pop(url, name, w, h, rs, sb, mn, st, oth) {
var resize = ((rs) ? "resizable="+rs+"," : "");
var scroll = ((sb) ? "scrollbars="+sb+"," : "");
var menu = ((mn) ? "toolbar="+mn+",location="+mn+",menubar="+mn+"," : "");
var sts = ((st) ? "status="+st+"," : "");
		
     var popupWin = window.open(url, name, resize + scroll + menu + sts + "width=" + w + ",height=" + h + " " + oth);
     if (document.layers) {
          popupWin.focus();
     }
}

function isEmail(str) {
	var pass = 0;
	if (window.RegExp) {
		var tempStr = "a";
		var tempReg = new RegExp(tempStr);
		if (tempReg.test(tempStr)) pass = 1;
	}
	
	if (!pass)
		return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
	
	var r1 = new RegExp("(@.*@)|(\\.\\.)|(@\\.)|(^\\.)");
	var r2 = new RegExp("^[a-zA-Z0-9\\.\\!\\#\\$\\%\\&\\'\\*\\+\\-\\/\\=\\?\\^\\_\\`\\{\\}\\~]*[a-zA-Z0-9\\!\\#\\$\\%\\&\\'\\*\\+\\-\\/\\=\\?\\^\\_\\`\\{\\}\\~]\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$");
	return (!r1.test(str) && r2.test(str));
}



    if (document.images) {
    
        img01 = new Image();
        img01.src = "/images/00_home/sub_01_off.jpg";
        img01_on = new Image();
        img01_on.src = "/images/00_home/sub_01_on.jpg";  
	   
	    img02 = new Image();
        img02.src = "/images/00_home/sub_02_off.jpg";
        img02_on = new Image();
        img02_on.src = "/images/00_home/sub_02_on.jpg";  
		
	    img03 = new Image();
        img03.src = "/images/00_home/sub_03_off.jpg";
        img03_on = new Image();
        img03_on.src = "/images/00_home/sub_03_on.jpg";  
		
	    img04 = new Image();
        img04.src = "/images/00_home/sub_04_off.jpg";
        img04_on = new Image();
        img04_on.src = "/images/00_home/sub_04_on.jpg";  				
		
	    img05 = new Image();
        img05.src = "/images/nav_main/nav01_about_off.gif";
        img05_on = new Image();
        img05_on.src = "/images/nav_main/nav01_about_on.gif";  
        
        img06 = new Image();
        img06.src = "/images/nav_main/nav02_house_off.gif";
        img06_on = new Image();
        img06_on.src = "/images/nav_main/nav02_house_on.gif"; 
        
        img07 = new Image();
        img07.src = "/images/nav_main/nav03_experience_off.gif";
        img07_on = new Image();
        img07_on.src = "/images/nav_main/nav03_experience_on.gif"; 
        
        img08 = new Image();
        img08.src = "/images/nav_main/nav04_contact_off.gif";
        img08_on = new Image();
        img08_on.src = "/images/nav_main/nav04_contact_on.gif"; 	
			
    };

	/*
	This change one image (current_name) into another (new_state).
	Leave this alone.
	*/

    function roll_over(current_name,new_state) {

        if (document.images) {

            document[current_name].src = eval(new_state + ".src");

        };

    };