if (document.images) {  
	menu_b1_off = new Image(); 
	menu_b1_off.src = "menu/menu_1_off.gif"; 
	menu_b1_over = new Image(); 
	menu_b1_over.src = "menu/menu_1_on.gif"; 
	menu_b2_off = new Image(); 
	menu_b2_off.src = "menu/contactus_off.gif"; 
	menu_b2_over = new Image(); 
	menu_b2_over.src = "menu/contactus_on.gif";
	menu_b3_off = new Image(); 
	menu_b3_off.src = "menu/aboutus_off.gif"; 
	menu_b3_over = new Image(); 
	menu_b3_over.src = "menu/aboutus_on.gif";
	menu_b4_off = new Image(); 
	menu_b4_off.src = "menu/philosophy_off.gif"; 
	menu_b4_over = new Image(); 
	menu_b4_over.src = "menu/philosophy_on.gif";
	menu_b5_off = new Image(); 
	menu_b5_off.src = "menu/community_off.gif"; 
	menu_b5_over = new Image(); 
	menu_b5_over.src = "menu/community_on.gif";
	menu_b6_off = new Image(); 
	menu_b6_off.src = "menu/businesspolicies_off.gif"; 
	menu_b6_over = new Image(); 
	menu_b6_over.src = "menu/businesspolicies_on.gif";
	menu_b7_off = new Image(); 
	menu_b7_off.src = "menu/programs_off.gif"; 
	menu_b7_over = new Image(); 
	menu_b7_over.src = "menu/programs_on.gif";
	menu_b8_off = new Image(); 
	menu_b8_off.src = "menu/firstvisit_off.gif"; 
	menu_b8_over = new Image(); 
	menu_b8_over.src = "menu/firstvisit_on.gif";
	menu_b9_off = new Image(); 
	menu_b9_off.src = "menu/articles_off.gif"; 
	menu_b9_over = new Image(); 
	menu_b9_over.src = "menu/articles_on.gif";
	menu_b10_off = new Image(); 
	menu_b10_off.src = "menu/testimonials_off.gif"; 
	menu_b10_over = new Image(); 
	menu_b10_over.src = "menu/testimonials_on.gif";
	menu_b11_off = new Image(); 
	menu_b11_off.src = "menu/products_off.gif"; 
	menu_b11_over = new Image(); 
	menu_b11_over.src = "menu/products_on.gif";
	menu_b12_off = new Image(); 
	menu_b12_off.src = "menu/certificate_off.gif"; 
	menu_b12_over = new Image(); 
	menu_b12_over.src = "menu/certificate_on.gif";
	menu_b13_off = new Image(); 
	menu_b13_off.src = "menu/healthlinks_off.gif"; 
	menu_b13_over = new Image(); 
	menu_b13_over.src = "menu/healthlinks_on.gif";
	menu_b14_off = new Image(); 
	menu_b14_off.src = "menu/forms_off.gif"; 
	menu_b14_over = new Image(); 
	menu_b14_over.src = "menu/forms_on.gif";
	menu_b15_off = new Image(); 
	menu_b15_off.src = "menu/faq_off.gif"; 
	menu_b15_over = new Image(); 
	menu_b15_over.src = "menu/faq_on.gif";
	menu_b16_off = new Image(); 
	menu_b16_off.src = "menu/Serotonin_off.gif"; 
	menu_b16_over = new Image(); 
	menu_b16_over.src = "menu/Serotonin_on.gif";
}

function BrowserCheck() { 
        var b = navigator.appName 
        if (b=="Netscape") this.b = "ns" 
        else if (b=="Microsoft Internet Explorer") this.b = "ie" 
        else this.b = b 
        this.version = navigator.appVersion 
        this.v = parseInt(this.version) 
        this.ns = (this.b=="ns" && this.v>=4) 
        this.ns4 = (this.b=="ns" && this.v==4) 
        this.ns5 = (this.b=="ns" && this.v==5) 
        this.ie = (this.b=="ie" && this.v>=4) 
        this.ie4 = (this.version.indexOf('MSIE 4')>0) 
        this.ie5 = (this.version.indexOf('MSIE 5')>0) 
        this.min = (this.ns||this.ie) 
} 
is = new BrowserCheck() 

function turn_off(ImageName) 
{ 	
	if (document.images != null) 
		{ 		
			document[ImageName].src = eval(ImageName + "_off.src"); 	
		} 
}  

function turn_over(ImageName) 
{ 	
	if (document.images != null) 
	{ 		
		document[ImageName].src = eval(ImageName + "_over.src"); 	
	} 
}