[R] [Q] extracting lower diagonal elements of a matrix

[Taka Matzmoto]

Hi R users

I like to extract lower diagonal elements of a matrix in such a way like, 
data[1,2], data[1,3],
...., data[5,6] are extracted from a matrix called 'data'

This short script below is what I have written so far.

##########################################
data <- matrix(rnorm(36,0,1),nrow=6)
temp<-c()
for (i in 1:(nrow(data)-1))
{
    for (j in (i+1):nrow(data))
    {
        temp<-append(temp,data[j,i])
    }
}
##########################################

Is there any function for this?  or is there any elegant way to do this 
task?

Thanks in advance.

TM