which=0
count=0
flash_num=5
flash_rate=1000
pause=100000000
function swap(){

if(which==0){which=1}
else{which=0}

if(which==0){document.getElementById("pic").src="images/view_sample2.jpg"}
if(which==1){document.getElementById("pic").src="images/view_sample1.jpg"}

timer=setTimeout("swap()",flash_rate)

count++
if(count==flash_num){
clearTimeout(timer)
count=0
setTimeout("swap()",pause) //
}


}
setTimeout("swap()",1000)