function cngImgA1(){
 document.a.src="images/br900_001.gif"; 
}
function cngImgA2(){
 document.a.src="images/br900_002.gif"; 
}
function cngImgA3(){
 document.a.src="images/br900_003.gif"; 
}
function cngImgA4(){
 document.a.src="images/br900_004.gif"; 
}

function cngImgB1(){
 document.a.src="images/br600_001.gif"; 
}
function cngImgB2(){
 document.a.src="images/br600_002.gif"; 
}
function cngImgB3(){
 document.a.src="images/br600_003.gif"; 
}
function cngImgB4(){
 document.a.src="images/br600_004.gif"; 
}

function cngImgC1(){
 document.a.src="images/micro_001.gif"; 
}
function cngImgC2(){
 document.a.src="images/micro_002.gif"; 
}
function cngImgC3(){
 document.a.src="images/micro_003.gif"; 
}
function cngImgC4(){
 document.a.src="images/micro_004.gif"; 
}


 onLoad="MM_preloadImages('images/br900_001.gif','images/br900_002.gif','images/br900_003.gif','images/br900_004.gif','images/br600_001.gif','images/br600_002.gif','images/br600_003.gif','images/br600_004.gif','images/micro_001.gif','images/micro_002.gif','images/micro_003.gif','images/micro_004.gif',)"